Question

Find the area of a circle givin the diameter of 12. Use 3.14 for pi.​

Answer 1

113.04 units^2

Explanation:

The area of a circle can be found using:

`a=\pi r^(2)`

First, we need to find the radius, since we have the diameter.

Radius

The radius is half the diameter, or

r=d/2

We know the diameter is 12, so we can substitute that in

r=12/2 Divide

r=6

Area

Now we know the radius and can substitute it into the area formula

`a=\pi r^(2)`

`a=\pi 6^2` Solve the exponent

`a=\pi 36`

Substitute 3.14 in for pi

a=3.14*36 Multiply

a=113.04

We aren't given a specific unit, so we can say the area is

113.04 units^2