SOLUTION: Please help me solve this problem - The circumference of a light pole is about 25 inches. What is its diameter? I think it is about 12.5 in. What is its radius? Thank you for

Algebra ->  Circles -> SOLUTION: Please help me solve this problem - The circumference of a light pole is about 25 inches. What is its diameter? I think it is about 12.5 in. What is its radius? Thank you for      Log On


   



Question 271029: Please help me solve this problem -
The circumference of a light pole is about 25 inches. What is its diameter? I think it is about 12.5 in.
What is its radius?
Thank you for helping me.

Answer by drk(1908) About Me  (Show Source):
You can put this solution on YOUR website!
The formula for circumference is
C+=+2%2Api%2Ar
From above , we get
25+=+2%2Api%2Ar
dividing by 2pi, we get
25%2F%282%2Api%29+=+r
This means that
r+=+3.979 inches and the diameter is
d+=+7.958 inches