Question

A shot-putt is a metallic sphere of radius 4.9cm. If the density of the metal is 7.8gper cm3, Find the area of the shot-put.

Answer 1

Answer:

Step-by-step explanation:  density = 7.8 g/ cm^3

Radius= 4.9 cm

Density per volume= 7.8/ 4/3 * 22/7* 4.9*4.9*4.9

Therefore    22/7* 4.9*4.9= 7.8/ (4/3* 4.9)

I.e., area= 39*3/ 49*2= 117/98= 1.1938 cm^2