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:
[tex]2 \pi r[/tex]
Input the information we know:
[tex]2 \pi r=12[/tex]
Solve for r, using the properties of equality:
Simplify.
[tex]6.28r=12[/tex]
Divide both sides by 6.28
[tex](6.28r)/6.28=(12)/6.28[/tex]
Simplify.
[tex]r=1.91[/tex]
The radius is 1.91cm long.
Hope this helps.
-Benjamin
