Answers

2015-06-28T11:27:54+08:00
Sol'n
Area of circle = (∏r^2)/2
substitute the area to the formula u will get the radius of 25cm which is the width of the rectangle and when u double it which is 50 that is the length of the rectangle b'coz it is coincides so the diameter of the circle is lie on the length of the rectangle..so when u get the area of the rectangle just simply multiply width of 25 and length of 50. you will get the area wch is 1250 sq.cm
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it is not the formula of a circle.. it is semicircle..