Question

Find the radius of the circle given the circumference. Use 3.14 for pi. Round to the nearest hundredth.

C = 28 ft.

Answer 1

4.46

Explanation:

As the circumference of a circle is pi multiplied by the diameter to work out the radius you would first divide the circumference of 28 by pi, which gives you 8.92. This is the diameter, however the question is asking for the radius. To work out the radius you would divide the diameter by 2, which gives you 4.46. This is because the radius is half of the diameter.

1) Divide 28 by pi.

`28/\pi =8.92`

2) Divide 8.92 by 2.

`8.92/2=4.46`