Question

The diameter of a circle is 8 miles what is the area?give the exact answer in simplest form.

Answer 1

If the circle has a diameter of 8 miles, then its radius is 4 miles. The area of a circle of radius r can be calculated using the expression:

`A=\pi\cdot r^2`

For this problem, r = 4 miles, then:

`A=\pi\cdot4^2=16\pi\text{ square miles}`