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

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.