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March 4, 2015

Posted by **Lyndse** on Friday, December 4, 2009 at 9:55pm.

(of the shaded region). There is a picture of a square, which is shaded, around a circle. The circle is touching all four sides of the square and there is 4.3m above the square. How do I find the area of the circle with only knowing the length of the four sides of the square?

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**bobpursley**, Friday, December 4, 2009 at 9:57pmIsn't the diameter 4.3 m? Using that, find the area of the circle. But the square is 4.3 to a side, so compute the area of the square. Now for the inside, subtract the circle area from the square area.

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**Ms. Sue**, Friday, December 4, 2009 at 9:57pmThe square measures 4.3 m on each side. Therefore, the diameter of the circle is 4.3 m.

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**Reiny**, Friday, December 4, 2009 at 9:59pmLooks like they are saying, each side of the square is 4.3

Doesn't that make the diameter of the circle also 4.3, and its radius 2.15 ?

So take the area of the square, and the area of the circle, then subtract the two.

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**Reiny**, Friday, December 4, 2009 at 10:00pmWhamm!

Triple within two minutes.

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**Ms. Sue**, Friday, December 4, 2009 at 10:00pmAnd we all agreed!!!!!

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**Lyndse**, Friday, December 4, 2009 at 10:01pmThank you all. You guys are awesome. So i find the area of both and just subtract the circle from the square. Perfect!

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