Q. 4

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Volume of a hemisphere = (2/3)πr3

Given, hemispherical bowl is made of steel 0.25 cm thick. The inside radius of the bowl is 5 cm.

Outer radius = 5 + 0.25 cm = 5.25 cm

Volume of steel used in the making of the bowl

Volume of steel used in the making of the bowl = 41.28 cm3

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