Question

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

Answer 1

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

$\Rightarrow$$l^2=8^2+6^2$

$\Rightarrow$ l = 10 cm

So, curved surface area = $\pi$rl

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