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Volume of a Sphere

A metallic sp...

Question

A metallic sphere 1 dm in diameter is beaten into a circular sheet of uniform thickness equal to 1 mm. Find the radius of the sheet.

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Solution

Radius of metallic sphere

Thickness of circular sheet

Let r₁ be the radius of sheet.

Therefore,

Volume of circular sheet = volume of metallic sphere

Hence, the radius of circular sheet = 40.8 cm

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