In a circus, a motorcyclist performs his stunts in a hollow sphere.The thickness of the sphere negligible. If the diameter of the hollow sphere is 14 m, then find the area available for the motorcyclist to perform stunts.(Take π=227)
616m2
Radius of the sphere =diameter2=142=7 m
Area available to the motorcyclist= Surface area of the sphere
=4πr2
=4×227×72
=616 m2