Question

A short put of a metallic sphere of radius 5.8 cm of if the dencity of metal is 7.8 gram per centimeter cube . find the mass of the shot put.​

Answer 1

Answer:

Since the shot-put is a solid sphere made of metal and its mass is equal to the product of its volume and density, we need to find the volume of the sphere.

Now, volume of the sphere =

3

4

πr

3

=

3

4

×

7

22

×4.9×4.9×4.9cm

3

=493cm

3

(nearly)

Further, mass of 1 cm

3

of metal is 7.8g

Therefore, mass of the shot-put =7.8×493g

=3845.44g=3.85kg (nearly)

Answer 2

Above photo is your answer.