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You know that the formula of area for a circle is = pi * r^2 ... r being the radius.
Therefore, you can plug it in to solve.
pi * r^2 = 108. You need to isolate r, so you would divide by pi for both sides.
r^2 = 34.378 . Then you can square root both sides
r = 5.68 . Of course, I am rounding! So you if you want an exact answer, leave the pi sign!
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∙ 14y ago
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