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Question

A clay ball was split in half and its insides is scooped out. If the hollow shape formed is a hemisphere of radius 7 cm, and has a thickness of 2 cm. Find the volume of the clay remaining in both the halves.

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Solution

Radius of hemisphere = 7 cm

Thickness of the clay ball = 2 cm

Radius of the clay ball = 7 + 2 = 9 cm

Volume of clay ball remaining is =

43πr1343πr2343π[9373]43×227×386=1617.52 cm3


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