Question

A hollow sphere in which a circus motorcyclist performs his stunts, has an inner diameter of 7m.Find the area available to the motorcyclist for riding.​

Answer 1

Step-by-step explanation:

ANSWER

Surface area of a sphere of radius 'r' =4πr

2

Radius of the sphere =

2

7

m

Hence, the area available to motorcyclist for riding $$ = 4 \dfrac {22}{7} \times \dfrac {7}{2} \times \dfrac {7}{2} = 154 {m}^{2} $$