volume of cone Archives – Mathemafia http://sh016.global.temp.domains/~mathemaf/tag/volume-of-cone/ Mathematics is like music - Enjoy it!!! Thu, 11 May 2023 08:49:42 +0000 en-US hourly 1 https://wordpress.org/?v=7.0 https://mathemafia.com/wp-content/uploads/2020/08/cropped-M__Logo__SM-1-32x32.png volume of cone Archives – Mathemafia http://sh016.global.temp.domains/~mathemaf/tag/volume-of-cone/ 32 32 Class 9 Chapter 11 | All Solutions | Surface Areas and Volumes https://mathemafia.com/class-9-chapter-11-all-solutions-surface-areas-and-volumes/ Thu, 16 Dec 2021 15:36:02 +0000 http://sh016.global.temp.domains/~mathemaf/?p=7192 This playlist consists of 101 questions, concepts, theorems and examples of class 9 chapter 13 (Surface Areas and Volumes) of class 9, NCERT textbook. Click a thumbnail to watch the tutorial. Every video in this series has been thoroughly visualised…

The post Class 9 Chapter 11 | All Solutions | Surface Areas and Volumes appeared first on Mathemafia.

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This playlist consists of 101 questions, concepts, theorems and examples of class 9 chapter 13 (Surface Areas and Volumes) of class 9, NCERT textbook. Click a thumbnail to watch the tutorial.

Every video in this series has been thoroughly visualised 🔍  prior to preparing the corresponding tutorial. This chapter is always a trouble to some extent to students 👩‍🎓. The reason is more the lack of visualisation rather than the knowledge of the subject. Every shape that we refer in these questions is used in our daily life in the form of different utensils, sports objects or other household objects like: Circle, sphere, cone, cylinder , cuboid can be compared to Roti, Cricket ball, Ice Cream cone, a glass and a gift box  🎁  respectively.

In every question, real life objects are used to better explain the questions so that you can also visualise and not just solve a question momentarily. Primary focus is to help students understand the underlying concepts and not just go with RATTEBAJI.🥸  🥸  🥸

Watch complete chapter on YouTube

There has been a lot of efforts  🏋️‍♀️  🏋️‍♀️  🏋️‍♀️   put in all these videos (Class 9 Chapter 13) and it will be really great and helpful if you share these videos with your friends  👯‍♀️ 👯‍♀️ 👯‍♀️   and classmates. You can share through WhatsApp, SnapChat, Messenger etc. Click any of the following icons to share it now.

The post Class 9 Chapter 11 | All Solutions | Surface Areas and Volumes appeared first on Mathemafia.

]]> Volume of Cylinder vs Cone https://mathemafia.com/volume-of-cylinder-vs-cone/ Fri, 11 Dec 2020 06:48:31 +0000 http://sh016.global.temp.domains/~mathemaf/?p=4082 Volume of Cylinder vs Cone The volume of a cone is exactly one-third of the volume of a cylinder with same base radius and height. The following activity is very easy for you to perform at home to verify this.…

The post Volume of Cylinder vs Cone appeared first on Mathemafia.

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Volume of Cylinder vs Cone

The volume of a cone is exactly one-third of the volume of a cylinder with same base radius and height. The following activity is very easy for you to perform at home to verify this. This will help to remember this concept forever. 

 

Class 9

All tutorials

Class 10

Planned in 2021

The post Volume of Cylinder vs Cone appeared first on Mathemafia.

]]> Class 9 | Chapter 13 | Surface areas and Volumes | Example 16 https://mathemafia.com/class-9-chapter-13-surface-areas-and-volumes-example-16/ Wed, 09 Dec 2020 13:50:40 +0000 http://sh016.global.temp.domains/~mathemaf/?p=3787 Example 16: Monica has a piece of canvas whose area is 551 m2. She uses it to have a conical tent made, with a base radius of 7 m. Assuming that all the stitching margins and the wastage incurred while…

The post Class 9 | Chapter 13 | Surface areas and Volumes | Example 16 appeared first on Mathemafia.

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Example 16: Monica has a piece of canvas whose area is 551 m2. She uses it to have a conical tent made, with a base radius of 7 m. Assuming that all the stitching margins and the wastage incurred while cutting, amounts to approximately 1 m2, find the volume of the tent that can be made with it.

Example 15
Example 17

Cone – Volume

It is quite easy to remember the formula of a cone because it is exactly one-third of the volume of a cylinder with same base radius and height. Watch activity performed in the following video that will never let you forget the formula of volume of cone.

Volume of Cone = πr²h/3

Volume of Cone = 1/3 Volume of cylinder

r = base radius of cone, h = height of cone 

What is Area / Surface area / Volume

It is recommended to understand the core concept of area, surface area and volume before we attempt any question based on these concepts.

Chapter 13 – Surface areas and Volumes

​

Examples

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Exercise 13.1

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The post Class 9 | Chapter 13 | Surface areas and Volumes | Example 16 appeared first on Mathemafia.

]]> Class 9 | Chapter 13 | Surface areas and Volumes | Example 15 https://mathemafia.com/class-9-chapter-13-surface-areas-and-volumes-example-15/ Wed, 09 Dec 2020 13:47:37 +0000 http://sh016.global.temp.domains/~mathemaf/?p=3786 Example 15: The height and the slant height of a cone are 21 cm and 28 cm respectively. Find the volume of the cone. Example 14 Example 16

The post Class 9 | Chapter 13 | Surface areas and Volumes | Example 15 appeared first on Mathemafia.

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Example 15: The height and the slant height of a cone are 21 cm and 28 cm respectively. Find the volume of the cone.

Example 14
Example 16

Cone – Volume

It is quite easy to remember the formula of a cone because it is exactly one-third of the volume of a cylinder with same base radius and height. Watch activity performed in the following video that will never let you forget the formula of volume of cone.

Volume of Cone = πr²h/3

Volume of Cone = 1/3 Volume of cylinder

r = base radius of cone, h = height of cone 

What is Area / Surface area / Volume

It is recommended to understand the core concept of area, surface area and volume before we attempt any question based on these concepts.

Chapter 13 – Surface areas and Volumes

​

Examples

Example 1

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Exercise 13.1

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The post Class 9 | Chapter 13 | Surface areas and Volumes | Example 15 appeared first on Mathemafia.

]]> Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 9 https://mathemafia.com/class-9-chapter-13-surface-areas-and-volumes-exercise-13-7-question-9/ Wed, 09 Dec 2020 06:39:03 +0000 http://sh016.global.temp.domains/~mathemaf/?p=3565 Question 9: A heap of wheat is in the form of a cone whose diameter is 10.5 m and height is 3 m. Find its volume. The heap is to be covered by canvas to protect it from rain. Find…

The post Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 9 appeared first on Mathemafia.

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Question 9: A heap of wheat is in the form of a cone whose diameter is 10.5 m and height is 3 m. Find its volume. The heap is to be covered by canvas to protect it from rain. Find the area of the canvas required.

Question 8
Ex: 13.8 | Question 1

Cone – Volume

It is quite easy to remember the formula of a cone because it is exactly one-third of the volume of a cylinder with same base radius and height. Watch activity performed in the following video that will never let you forget the formula of volume of cone.

Volume of Cone = πr²h/3

Volume of Cone = 1/3 Volume of cylinder

r = base radius of cone, h = height of cone 

What is Area / Surface area / Volume

It is recommended to understand the core concept of area, surface area and volume before we attempt any question based on these concepts.

Chapter 13 – Surface areas and Volumes

​

Examples

Example 1

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Exercise 13.1

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The post Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 9 appeared first on Mathemafia.

]]> Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 8 https://mathemafia.com/class-9-chapter-13-surface-areas-and-volumes-exercise-13-7-question-8/ Wed, 09 Dec 2020 06:38:59 +0000 http://sh016.global.temp.domains/~mathemaf/?p=3564 Question 8: If the triangle ABC in the Question 7 above is revolved about the side 5 cm, then find the volume of the solid so obtained. Find also the ratio of the volumes of the two solids obtained in…

The post Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 8 appeared first on Mathemafia.

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Question 8: If the triangle ABC in the Question 7 above is revolved about the side 5 cm, then find the volume of the solid so obtained. Find also the ratio of the volumes of the two solids obtained in Questions 7 and 8.

Question 7
Question 9

Cone – Volume

It is quite easy to remember the formula of a cone because it is exactly one-third of the volume of a cylinder with same base radius and height. Watch activity performed in the following video that will never let you forget the formula of volume of cone.

Volume of Cone = πr²h/3

Volume of Cone = 1/3 Volume of cylinder

r = base radius of cone, h = height of cone 

What is Area / Surface area / Volume

It is recommended to understand the core concept of area, surface area and volume before we attempt any question based on these concepts.

Chapter 13 – Surface areas and Volumes

​

Examples

Example 1

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Exercise 13.1

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Concepts

The post Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 8 appeared first on Mathemafia.

]]> Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 7 https://mathemafia.com/class-9-chapter-13-surface-areas-and-volumes-exercise-13-7-question-7/ Wed, 09 Dec 2020 06:38:56 +0000 http://sh016.global.temp.domains/~mathemaf/?p=3563 Question 7: A right triangle ABC with sides 5 cm, 12 cm and 13 cm is revolved about the side 12 cm. Find the volume of the solid so obtained. Question 6 Question 8

The post Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 7 appeared first on Mathemafia.

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Question 7: A right triangle ABC with sides 5 cm, 12 cm and 13 cm is revolved about the side 12 cm. Find the volume of the solid so obtained.

Question 6
Question 8

Cone – Volume

It is quite easy to remember the formula of a cone because it is exactly one-third of the volume of a cylinder with same base radius and height. Watch activity performed in the following video that will never let you forget the formula of volume of cone.

Volume of Cone = πr²h/3

Volume of Cone = 1/3 Volume of cylinder

r = base radius of cone, h = height of cone 

What is Area / Surface area / Volume

It is recommended to understand the core concept of area, surface area and volume before we attempt any question based on these concepts.

Chapter 13 – Surface areas and Volumes

​

Examples

Example 1

Example 2

Example 3

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Exercise 13.1

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The post Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 7 appeared first on Mathemafia.

]]> Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 6 https://mathemafia.com/class-9-chapter-13-surface-areas-and-volumes-exercise-13-7-question-6/ Wed, 09 Dec 2020 06:38:51 +0000 http://sh016.global.temp.domains/~mathemaf/?p=3562 Question 6: The volume of a right circular cone is 9856 cm3. If the diameter of the base is 28 cm, find (i) height of the cone (ii) slant height of the cone (iii) curved surface area of the cone…

The post Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 6 appeared first on Mathemafia.

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Question 6: The volume of a right circular cone is 9856 cm3. If the diameter of the base is 28 cm, find

(i) height of the cone (ii) slant height of the cone (iii) curved surface area of the cone

Question 5
Question 7

Cone – Volume

It is quite easy to remember the formula of a cone because it is exactly one-third of the volume of a cylinder with same base radius and height. Watch activity performed in the following video that will never let you forget the formula of volume of cone.

Volume of Cone = πr²h/3

Volume of Cone = 1/3 Volume of cylinder

r = base radius of cone, h = height of cone 

What is Area / Surface area / Volume

It is recommended to understand the core concept of area, surface area and volume before we attempt any question based on these concepts.

Chapter 13 – Surface areas and Volumes

​

Examples

Example 1

Example 2

Example 3

Example 4

Example 5

Example 6

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Exercise 13.1

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Concepts

The post Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 6 appeared first on Mathemafia.

]]> Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 5 https://mathemafia.com/class-9-chapter-13-surface-areas-and-volumes-exercise-13-7-question-5/ Wed, 09 Dec 2020 06:38:49 +0000 http://sh016.global.temp.domains/~mathemaf/?p=3561 Question 5: A conical pit of top diameter 3.5 m is 12 m deep. What is its capacity in kilolitres? Question 4 Question 6

The post Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 5 appeared first on Mathemafia.

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Question 5: A conical pit of top diameter 3.5 m is 12 m deep. What is its capacity in kilolitres?

Question 4
Question 6

Cone – Volume

It is quite easy to remember the formula of a cone because it is exactly one-third of the volume of a cylinder with same base radius and height. Watch activity performed in the following video that will never let you forget the formula of volume of cone.

Volume of Cone = πr²h/3

Volume of Cone = 1/3 Volume of cylinder

r = base radius of cone, h = height of cone 

What is Area / Surface area / Volume

It is recommended to understand the core concept of area, surface area and volume before we attempt any question based on these concepts.

Chapter 13 – Surface areas and Volumes

​

Examples

Example 1

Example 2

Example 3

Example 4

Example 5

Example 6

Example 7

Example 8

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Examples

Example 11

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Exercise 13.1

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Exercise 13.3

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Concepts

The post Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 5 appeared first on Mathemafia.

]]> Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 4 https://mathemafia.com/class-9-chapter-13-surface-areas-and-volumes-exercise-13-7-question-4/ Wed, 09 Dec 2020 06:38:44 +0000 http://sh016.global.temp.domains/~mathemaf/?p=3560 Question 4: If the volume of a right circular cone of height 9 cm is 48 π cm3, find the diameter of its base. Question 3 Question 5

The post Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 4 appeared first on Mathemafia.

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Question 4: If the volume of a right circular cone of height 9 cm is 48 π cm3, find the diameter of its base.

Question 3
Question 5

Cone – Volume

It is quite easy to remember the formula of a cone because it is exactly one-third of the volume of a cylinder with same base radius and height. Watch activity performed in the following video that will never let you forget the formula of volume of cone.

Volume of Cone = πr²h/3

Volume of Cone = 1/3 Volume of cylinder

r = base radius of cone, h = height of cone 

What is Area / Surface area / Volume

It is recommended to understand the core concept of area, surface area and volume before we attempt any question based on these concepts.

Chapter 13 – Surface areas and Volumes

​

Examples

Example 1

Example 2

Example 3

Example 4

Example 5

Example 6

Example 7

Example 8

Example 9

Example 10

Examples

Example 11

Example 12

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Exercise 13.1

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Concepts

The post Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 4 appeared first on Mathemafia.

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