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The figure above represents the floor of a square foyer with

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The figure above represents the floor of a square foyer with [#permalink] New post 31 Aug 2003, 09:11
The figure above represents the floor of a square foyer with a circular rug partially covering the floor and extending to the outer edges of the floor as shown. What is the area of the foyer that is not covered by the rug?
(1) The area of the foyer is 9 square meters.
(2) The area of the rug is 2.25pi square meters.
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 [#permalink] New post 31 Aug 2003, 19:47
D.

You need the area of the square and the area of the circle

(1) The area of the foyer is 9 square meters.
From this oyu can determine the radius of the circle and hence it's area

(2) The area of the rug is 2.25pi square meters.
From this you can determine the radius of the circle and hence the length of the sides of the square.
  [#permalink] 31 Aug 2003, 19:47
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