Question

if area of the base of a right circular cone is 314cm2 and height is 18 cm find the volume of the cone

Answer 1

$volume \: of \: cone \: = 1 \div 3\pi \: {r}^{2} h$
$\pi {r}^{2} = 314 \: {cm}^{2}$
$h \: = \: 18cm$
$volume \: of \: cone \: = \: 1 \times 314 \times 18 \\ \div 3$
$= 314 \times 6$
$= 1884 {cm}^{3}$
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