SOLUTION: A circular playground for a daycare center is to be covered with 9" square tiles. The circle has a diameter of 12 ft. The tiles are packaged in boxes of 25 tiles. How many boxes of

Question 138690: A circular playground for a daycare center is to be covered with 9" square tiles. The circle has a diameter of 12 ft. The tiles are packaged in boxes of 25 tiles. How many boxes of tiles are needed?
A. 8 boxes
B. 9 boxes
C. 12 boxes
D. 13 boxes
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A circular playground for a daycare center is to be covered with 9" square tiles. The circle has a diameter of 12 ft. The tiles are packaged in boxes of 25 tiles. How many boxes of tiles are needed?
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radius = 6 ft = 72 inches
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Area = pi*72^2 = 5184*pi sq in
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Area covered by a box of tiles = 9^2*25 sq in
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# of boxes need = [5184*pi]/[81*25] = 8.0425 boxes
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9 boxes needed
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Cheers,
Stan H.
A. 8 boxes
B. 9 boxes
C. 12 boxes
D. 13 boxes
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