The radius and height of a right circular cone are in the ratio 4 : 3. and its volume is 2156 cm³. Find the curved surface area of the cone.

Since the radius and height of a cone is 4:3 so let radius = 4x and height = 3x

Volume of a cone , Given volume =

⇒ ⇒ x

So , r =14 cm and height = 10.5 cm

Here, r=14 cm and h=10.5 cm

Curved surface area of a cone =