SOLUTION: * "A square is inscribed in a circle of area 18pi.Find the side of the square.(with explanation) "*

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Question 1063165: * "A square is inscribed in a circle of area 18pi.Find the side of the square.(with explanation) "*
Found 2 solutions by Fombitz, Alan3354:
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
The diagonal of the square is equal to the diameter of the circle.
So then the side of the square forms a right triangle,
s%5E2%2Bs%5E2=D%5E2
2s%5E2=D%5E2
You also know,
%28pi%2F4%29D%5E2=18pi
So,
D%5E2=72
Substituting,
2s%5E2=72
s%5E2=36
s=6

Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
A square is inscribed in a circle of area 18pi.Find the side of the square.
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Area = pi*r^2 = 18pi
r^2 = 18
r+=+sqrt%2818%29
d+=+2sqrt%2818%29+=+sqrt%2872%29
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The diagonal of the square, d, is the diameter.
side length = s
d^2 = s^2 + s^2
72 = 2s^2
s^2 = 36
s = 6