SOLUTION: If a square has an area of a 100 and theres a circle inside of it, how is the circle's area 80

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Question 544405: If a square has an area of a 100 and theres a circle inside of it, how is the circle's area 80
Answer by Earlsdon(6294) About Me  (Show Source):
You can put this solution on YOUR website!
It isn't, exactly!
If the square has an area of 100, then the side of the square must be 10 (A = 10*10 = 100).
The inscribed circle must have a radius equal to half the length of the side of the square (10/2 = 5
The area of a circle whose radius is 5 is:
A+=+%28pi%29r%5E2
A+=+%28pi%295%5E2
A+=+%283.14%29%2825%29
A+=+78.5 Approximately.