SOLUTION: A large circle has 81 times the area of a small circle. If the radius of the large circle is 45 inches, what is the radius of the small circle? (Think, how many times greater is th
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Question 319611: A large circle has 81 times the area of a small circle. If the radius of the large circle is 45 inches, what is the radius of the small circle? (Think, how many times greater is the radius of a large circle whose area is 81 times larger than a smaller circle?)
Answer by Greenfinch(383) (Show Source): You can put this solution on YOUR website!
If areas are in the ratio 81:1, the lengths are in the ratio 9:1, so the radius is 45/9 or 5 inches
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