SOLUTION: PLEASE HELP!! Set up an equation and solve the following problem. Find the length of a radius of a circle such that the circumference of the circle is numerically equal to the are

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Question 457907: PLEASE HELP!!
Set up an equation and solve the following problem. Find the length of a radius of a circle such that the circumference of the circle is numerically equal to the area of the circle.
Answer by ankor@dixie-net.com(22740) About Me  (Show Source):
You can put this solution on YOUR website!
Set up an equation and solve the following problem.
Find the length of a radius of a circle such that the circumference of the
circle is numerically equal to the area of the circle.
:
We know, Area = pi%2Ar%5E2 and Circumference = 2%2Api%2Ar
Problem is: Area = Circumference, therefore
pi%2Ar%5E2 = 2%2Api%2Ar
Divide both sides by pi%2Ar
%28pi%2Ar%5E2%29%2F%28pi%2Ar%29 = %282%2Api%2Ar%29%2F%28pi%2Ar%29
Cancels the pi%2Ar, we are left with
:
r = 2 is the length of the radius
;
:
See if that is true
pi%5E2%5E2%29 = 12.556
2%2Api%2A2%29 = 12.566; of course r=2 is the only value where this is true, right?