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January 30, 2015

January 30, 2015

Posted by **Jane** on Monday, May 9, 2011 at 1:52pm.

- Geometry -
**Henry**, Tuesday, May 10, 2011 at 5:25pmX = Hor. side of recangle.

Y = Ver. side of rectangle.

Ar = X*Y = 50cm^2.

X = 2r1 + 2r2,

X = 2r1 + 2r1 = 4r1.

y = 2r1 = 2r2.

Ar = X*Y = 50,

4r1 * 2r1 = 50,

8r1^2 = 50,

r1^2 = 6.25,

r1 = 2.5cm = r2.

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