Question

Find the lateral area of the cone in terms of π.

15π cm2


18π cm2


21π cm2


12π cm2

Answer 1

`12\pi \: {cm}^(2)`

Explanation:

Given:

A cone

r (radius) = 3 cm

h (height) = 4 cm

Find: A (lateral) - ?

`a(lateral) = \pi * r * l`

`a(lateral) = \pi * 3 * 4 = 12\pi \: {cm}^(2)`