Question

Find the lateral area of this cone.

Leave your answer in terms of .
15in
12 in
LA = [ ? ]t in
Hint: Lateral Area of a Cone = mre
Where e = slant height

Answer 1

Lateral is 180π

SURFACE AREA IS 340π

Explanation:

Answer 2

Given:

Radius of the base of the cone = 12 in.

The slant height of the cone = 15 in.

To find:

The lateral surface area of the given cone.

Solution:

The lateral surface area of the cone is:

`LA=\pi rl`

Where, r is the radius of the base of the cone and h is the slant height of the cone.

Putting
`r=12,h=15`, we get

`LA=\pi (12)(15)`

`LA=180\pi`

The lateral surface area of the cone is 180π in ² and the missing value for the blank is 180.