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If 2 quarter circles are inscribed in a rectangle, and the area of the two 1/4 circles is 200, then what is the area of rectangle uncovered by the semicircles?sad

 Jan 10, 2017

Best Answer 

 #1
avatar+37093 
+5

To answer this question I am using the diagram below...you can see that the side length of the rectangle is R the radius of the semicircle...ALSO the length is 2R.   We are looking for the shaded area.

2 x 1/4 pi R^2 = area of semicircles= 200

so R = 11.28      2R = 22.56          so the area NOT covered is equal to   22.56 x 11.28 - 200 = 54.47

 Jan 10, 2017
 #1
avatar+37093 
+5
Best Answer

To answer this question I am using the diagram below...you can see that the side length of the rectangle is R the radius of the semicircle...ALSO the length is 2R.   We are looking for the shaded area.

2 x 1/4 pi R^2 = area of semicircles= 200

so R = 11.28      2R = 22.56          so the area NOT covered is equal to   22.56 x 11.28 - 200 = 54.47

ElectricPavlov Jan 10, 2017
 #2
avatar+129840 
0

Very nice, EP......!!!!!

 

 

cool cool cool

 Jan 10, 2017

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