Question

Find the area of the circle with the given radius or diameter. Use = 3.14. d = 10

Answer 1

Formula for finding the area of a circle:
`A = \pi r^2`
We need to radius but we only have the diameter.

Luckily for us, if you have the diameter, you have the radius.
Because the radius is the diameter over 2.

10 / 2 = 5

Plug in the values.

A = (3.14)5^2
A = (3.14)25
A = 78.5

So, the answer is 78.5.