Question

The circumference of a circle is 12 inches. What is the radius

Answer 1

Greetings!

"The circumference of a circle is 12 inches. What is the radius?"...

We can use the formula to find the circumference of circle to solve this:
$2 \pi r$

Input the information we know:
$2 \pi r=12$

Solve for r, using the properties of equality:

Simplify.
$6.28r=12$
Divide both sides by 6.28
$(6.28r)/6.28=(12)/6.28$
Simplify.
$r=1.91$

The radius is 1.91cm long.

Hope this helps.
-Benjamin