SOLUTION: Find the diameter of the circle that has a circumference equal to its area. 2 4 8 10

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Question 818619: Find the diameter of the circle that has a circumference equal to its area.

2
4
8
10
Answer by rothauserc(4718) About Me  (Show Source):
You can put this solution on YOUR website!
pi * r^2 = pi * d
r^2 = d
this solved with diameter = 4, then radius is 2
2^2 = 4
4 = 4