Question

The height of a cone is 8 cm and its base radius is 6 cm. The curved surface area the cone is (Use $\pi$ = 3.14).

• A.
• B.
• C.

Answer 1

The correct option is B

Here, h= 8cm and r= 6cm. So, from $l^2=h^2+r^2$, we have

$l^2=8^2+6^2$, l = 10 cm So, curved surface area = $\pi$rl

= $3.14\times 6\times 10{cm}^2=188.4{cm}^2$