Question

Find the approximate value of the circumference of a circle with the given radius. Use pi = 3.14. Round your results to one more decimal than in the given radius.

4 inches
C =
12.5 inches
12.6 inches
25.1 inches

Answer 1

Circumference =pi x Diameter
3.14 x (4x2) = 25.12
Circumference =25.1 inches

Answer 2

To find the circumference we need to know the next equation:

`C = 2*\pi *r`

So replacing with the given radio r = 4 inches;

`C = 2*3.14*4\\C = 25.1`

So the result is:

C = 25.1 inches