Question

What is the lateral surface area of a cone with radius 4 cm and hight 7cm?

Answer 1

Answer:

The answer is 101.31 cm2.

Answer 2

Answer:

Lateral surface area is 101.31 sq.cm

Step-by-step explanation:

Radius of a cone=4cm

Height=7cm

Slant height=$\sqrt{r^2+h^2}$=$\sqrt{4^2+7^2} =\sqrt{65}=8.06cm$

Lateral surface area=$\pi$rl

                                 =3.14x 4 x 8.062

                                 =101.31 sq.cm