Class 9 | Chapter 13 | Surface areas and Volumes | Example 18

09 Dec
Class 9 - Sphere, Class 9 - Surface areas and Volumes, Math - Class 9 | NCERT, , , , , , , ,

Example 18: A shot-putt is a metallic sphere of radius 4.9 cm. If the density of the metal is 7.8 g per cm3, find the mass of the shot-putt.

Example 17
Example 19

Sphere – Volume

Volume of sphere = 4πr³/3

Volume of hemisphere = 2πr³/3

r = base radius of sphere

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

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Exercise 13.1

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Concepts

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