A paper is in the form of a rectangle ABCD in which AB = 30 cm and DA = 20 cm. A
semicircular portion with BC as diameter is cut off. Find the area of the remaining part..
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Area of rectangle =30x20=600cm2
I Area of semicircle=πr 2/2 = 3.14x10^2/2=314/2=152cm2
Area of remaining Part=600-152=
448cm2. Ans
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