Q4 of 70 Page 21

The hollow sphere, in which the circus motor cyclist performs his stunts, has a diameter of 7 m. Find the area available to the motorcyclist for riding.

Surface area of a sphere = 4πr2


Given, hollow sphere, in which the circus motor cyclist performs his stunts, has a diameter of 7 m


Area available to the motorcyclist for riding = 4 × (22/7) × 3.52 = 154 m2


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