Q. 303.9( 24 Votes )

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Answer :

Volume of a hemisphere = (2/3)πr^{3}

Volume of material = (2/3)π × (r_{0}^{3} – r_{i}^{3})

Given, hemispherical tank is made up of an iron sheet 1 cm thick and the inner radius is 1 m

⇒ r_{0} = 1 + 0.01 = 1.01 m

Volume of iron used

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