SOLUTION: Express the length of the perimeter of a circle in terms of the area of the circle. Use A for the area in your answer.

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Question 255992: Express the length of the perimeter of a circle in terms of the area of the circle.
Use A for the area in your answer.
Answer by josmiceli(19441) About Me  (Show Source):
You can put this solution on YOUR website!
In words:
perimeter = area x some conversion factor, x
Let r = radius
perimeter = 2%2Api%2Ar
area = pi%2Ar%5E2
2%2Api%2Ar+=+%28pi%2Ar%5E2%29%2Ax
Divide both sides by pi%2Ar
2+=+r%2Ax
x+=+2%2Fr
perimeter = A x 2/r