Question

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

572π in2


286π in2


276π in2


196π in2

Answer 1

`286\pi \: {in}^(2)`

Explanation:

Given:

A cone

d (diameter) = 22 in

l = 26 in

Find: A (lateral) - ?

First, let's find the length of the radius:

`r = (1)/(2) * d = (1)/(2) * 22 = 11 \: in`

Now, we can find the lateral area:

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

`a(lateral) = \pi * 11 * 26 = 286\pi \: {in}^(2)`