volume Archives – Mathemafia

Class 9 Chapter 11 | All Solutions | Surface Areas and Volumes

Sunil Syal — Thu, 16 Dec 2021 15:36:02 +0000

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

Example 1 Chapter 11 Class 9 | Surface Areas And Volumes – Cone | NCERT Maths

Example 2 Chapter 11 Class 9 | Surface Areas And Volumes – Cone | NCERT Maths

Surface Area of Right circular Cone | Formula derivation with practical example | Class 9 Maths

Example 3 Chapter 11 Class 9 | Surface Areas And Volumes – Cone | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.1 Question 1 | Surface Areas and Volumes – Cone | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.1 Question 2 | Surface Areas and Volumes -Cone | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.1 Question 3 | Surface Areas and Volumes | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.1 Question 4 | Surface Areas and Volumes | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.1 Question 5 | Surface Areas and Volumes – Cone | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.1 Question 6 | Surface Areas and Volumes – Cone | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.1 Question 7 | Surface Areas and Volumes -Cone | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.1 Question 8 | Surface Areas and Volumes – Cone | NCERT Maths

Example 4 Chapter 11 Class 9 | Surface Areas And Volumes – Sphere | NCERT Maths

Example 5 Chapter 11 Class 9 | Surface Areas And Volumes – Sphere | NCERT Maths

Example 6 Chapter 11 Class 9 | Surface Areas And Volumes – Sphere | NCERT Maths

Example 7 Chapter 11 Class 9 | Surface Areas And Volumes – Sphere | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.2 Question 1 | Surface Areas and Volumes – Sphere | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.2 Question 2 | Surface Areas and Volumes – Sphere | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.2 Question 3 | Surface Areas and Volumes – Sphere | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.2 Question 4 | Surface Areas and Volumes – Sphere | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.2 Question 5 | Surface Areas and Volumes – Sphere | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.2 Question 6 | Surface Areas and Volumes – Sphere | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.2 Question 7 | Surface Areas and Volumes – Sphere | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.2 Question 8 | Surface Areas and Volumes – Sphere | NCERT Maths

Class 9 | Chapter 11 | Exercise 11.2 Question 9 | Surface Areas and Volumes – Sphere | NCERT Maths

Volume of Cylinder vs Cone | Concepts explained with practical experiment | Class 9 Maths

Example 8 Chapter 11 Class 9 | Surface Areas And Volumes – Cone | NCERT Maths

Example 9 Chapter 11 Class 9 | Surface Areas And Volumes – Cone | NCERT Maths

Right circular Cone | Concepts with Demonstration | Activity | Experiment | Practical

Question 1 Exercise 11.3 Chapter 11 Class 9 | Surface Areas and Volumes – Cone | NCERT Maths

Question 2 Exercise 11.3 Chapter 11 Class 9 | Surface Areas and Volumes – Cone | NCERT Maths

Question 3 Exercise 11.3 Chapter 11 Class 9 | Surface Areas and Volumes – Cone | NCERT Maths

Question 4 Exercise 11.3 Chapter 11 Class 9 | Surface Areas and Volumes – Cone | NCERT Maths

Question 5 Exercise 11.3 Chapter 11 Class 9 | Surface Areas and Volumes – Cone | NCERT Maths

Question 6 Exercise 11.3 Chapter 11 Class 9 | Surface Areas and Volumes – Cone | NCERT Maths

Question 7 Exercise 11.3 Chapter 11 Class 9 | Surface Areas and Volumes – Cone | NCERT Maths

Question 8 Exercise 11.3 Chapter 11 Class 9 | Surface Areas and Volumes – Cone | NCERT Maths

Question 9 Exercise 11.3 Chapter 11 Class 9 | Surface Areas and Volumes – Cone | NCERT Maths

1 Litres is equal to 1000 Cubic centimetre | Concepts with Demonstration | Activity | Experiment

Example 10 Chapter 11 Class 9 | Surface Areas And Volumes – Sphere | NCERT Maths

Example 11 Chapter 11 Class 9 | Surface Areas And Volumes – Sphere | NCERT Maths

Example 12 Chapter 11 Class 9 | Surface Areas And Volumes – Sphere | NCERT Maths

Question 1 Exercise 11.4 Chapter 11 Class 9 | Surface Areas and Volumes – Sphere | NCERT Maths

Question 2 Exercise 11.4 Chapter 11 Class 9 | Surface Areas and Volumes – Sphere | NCERT Maths

Question 3 Exercise 11.4 Chapter 11 Class 9 | Surface Areas and Volumes – Sphere | NCERT Maths

Question 4 Exercise 11.4 Chapter 11 Class 9 | Surface Areas and Volumes – Sphere | NCERT Maths

Question 5 Exercise 11.4 Chapter 11 Class 9 | Surface Areas and Volumes – Sphere | NCERT Maths

Question 6 Exercise 11.4 Chapter 11 Class 9 | Surface Areas and Volumes – Sphere | NCERT Maths

Question 7 Exercise 11.4 Chapter 11 Class 9 | Surface Areas and Volumes – Sphere | NCERT Maths

Question 8 Exercise 11.4 Chapter 11 Class 9 | Surface Areas and Volumes – Sphere | NCERT Maths

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.

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Cubic meters to litres

Sunil Syal — Sun, 13 Dec 2020 05:29:29 +0000

Cubic meters to litres

This tutorial will help you understand the conversion of cubic meters (meter cube) to litres. There must be a starting point to understand the conversion and that is the relationship of litres to cubic centimeters. You must watch cc to litres conversion tutorial before you view this video.

1m³ = 1000 Litre = 1 Kilolitres

Class 9

All tutorials

Class 10

Planned in 2021

The post Cubic meters to litres appeared first on Mathemafia.

Volume Of Cuboid and Cube

Sunil Syal — Fri, 11 Dec 2020 06:49:05 +0000

Cube & Cuboid

Finding volume of a cube or a cuboid is quite simple. Every cube/cuboid has 6 sides. All we need is multiply the length, breadth and height to find the volume or capacity. However, there is some difference between volume and capacity of an object. This has been explained in the video embedded in the end of the post.

A cube is a cuboid that has all edges of equal length. Hence, every cube is a cuboid as well but every cuboid is not a cube.

Volume of cuboid = length * breadth * height = l * b * h

Volume of cube = a³ ( where a is any edge of the cube)

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

It is recommended to understand the concept of volume and capacity before you attempt any questions related to volume and capacity of cube and cuboid.

Class 9

All tutorials

Class 10

Planned in 2021

The post Volume Of Cuboid and Cube appeared first on Mathemafia.

Volume and capacity of Cylinder

Sunil Syal — Fri, 11 Dec 2020 06:48:55 +0000

Cylinder – Volume & Capacity

In this tutorial, you will learn the meaning of volume and capacity of cylinder and the difference between them, demonstrated with practical examples.

Volume of cylinder = πr²h

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

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.

Class 9

All tutorials

Class 10

Planned in 2021

The post Volume and capacity of Cylinder appeared first on Mathemafia.

Volume of Cylinder vs Cone

Sunil Syal — Fri, 11 Dec 2020 06:48:31 +0000

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.

Right circular Cone

Sunil Syal — Fri, 11 Dec 2020 06:48:23 +0000

Cone

Cone is an interesting geometric figure to understand and work upon. You come across so many items in daily life that are conical in shape – like a picnic tent, an ice cream cone, a birthday cap and there are many more that you can think about.

In this chapter we will work on only right circular cones. To understand what a right circular cone is, watch the following video.

Lateral or curved surface area of cone = πrl

r = base radius, l = slant height

Total surface area of cylinder = πrl + πr² = πr (l + r)

r = base radius, l = slant height

To understand the above mentioned formulas, watch the following video. It is highly recommended to watch it before you attempt any cone related questions.

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.

Class 9

All tutorials

Class 10

Planned in 2021

The post Right circular Cone appeared first on Mathemafia.

Litres and Cubic centimetre

Sunil Syal — Fri, 11 Dec 2020 06:48:16 +0000

Litres and Cubic centimetre

This activity will help you understand the conversion of cubic centimeter to litres. You can also perform this activity at home and you will never forget this conversion in your life.

1000 cm³ = 1000 cc = 1 Litre

Class 9

All tutorials

Class 10

Planned in 2021

The post Litres and Cubic centimetre appeared first on Mathemafia.

Area / Surface area / Volume – Introduction

Sunil Syal — Fri, 11 Dec 2020 06:34:04 +0000

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.

Class 9

All tutorials

Class 10

Planned in 2021

The post Area / Surface area / Volume – Introduction appeared first on Mathemafia.