Question

What is the circumference (in inches) of a circle with radius of 5 inches? Use 3.14 for π.

Answer 1

31.4in

Explanation:

A circle's circumference is given by c=2πr.

Using this formula and the given radius (5), we can rewrite the equation to c=2×π×5, and simplify to c=10π.

From there, we want to replace π with 3.14. This gives the equation c=10×3.14.

This can be solved to c=31.4in.

**This content involves the circumference of circles, which you may want to revise. If this is required to be calculated by hand, you may need to revise multiplying with decimals too. I'm always happy to help!

Answer 2

Answer=31.42(rounded to the 100th)

C=2pi(r)

So 2*5=10

Then 10*pi and you get your circumference