Question

The volume of a cylinder is 2512 cu cm and it's height is 12.5 cm.find the radius of its base.(Take π=3.14)

Answer 1

$\pi \: r {}^{2} h = volume$
$\pi \: r {}^{2} = 2512 \div 12.5 \\ = 200.96 \\ r {}^{2} = 200.96 \div 3.14 = 64 \\ r = \sqrt{64} = 8$
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abb