Homework Help: Geometry

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

2 equal circles in rectangle. if area of rectangle is 50 cm squared, wht is the radius in cm of each circle?

Geometry - Henry, Tuesday, May 10, 2011 at 5:25pm
X = 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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