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March 29, 2017

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a high school wrestling mat must be square with 38-foot sides and contain two circles as shown. suppose the inner circle has a radius of "s" feet and the outer circle's radius is nine feet longer than the inner circle.

*write an expression for the area of the larger circle.

* write an expression for the area of the suqare outside the circle.

*use the expression to find the area if s=1.

  • algebra 1 - ,

    The outer circle has radius s + 9. Its area is pi(s+9)^2, and the area outside the outer circle is (38)^2 - pi(s+9)^2

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