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

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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.

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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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