Question

A right circular cone of radius 3cm has a curved surface area of 47.1cm^2 find the volume of cone

Answer 1

Here r = 3, πrl = 47.1

$\bf\huge l = \frac{47.1}{3\times3.14} = 5cm$

$\bf\huge h =\sqrt{5^2-3^2}$

$\bf\huge Volume\:of \:Cone = \frac{1}{3}\times3.14\times3\times3\times4$

= 37.68 cm^3