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Question

In a circus, a motorcyclist performs his stunts in a hollow sphere. The thickness of the sphere is 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)


A

516m2

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B

616m2

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C

586m2

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D

486m2

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Solution

The correct option is B

616m2


Radius of the sphere =diameter2=142=7 m

Area available to the motorcyclist= Surface area of the sphere

=4πr2

=4×227×72


=616m2


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