11
Dec
09
Dec
Class 9 | Chapter 13 | Surface areas and Volumes | Example 14
Example 14: At a Ramzan Mela, a stall keeper in one of the food stalls has a large cylindrical vessel of base radius 15 cm filled up to a height of 32 cm with orange juice. The juice is filled…
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09
Dec
Class 9 | Chapter 13 | Surface areas and Volumes | Example 13
Example 13: The pillars of a temple are cylindrically shaped (see Fig. 13.26). If each pillar has a circular base of radius 20 cm and height 10 m, how much concrete mixture would be required to build 14 such pillars?…
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09
Dec
Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 9
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…
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09
Dec
Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 8
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…
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09
Dec
Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 7
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
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09
Dec
Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 6
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…
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09
Dec
Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 5
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
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09
Dec
Class 9 | Chapter 13 | Surface areas and Volumes | Exercise 13.7 | Question 4
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
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