Q. 104.0( 9 Votes )

From a rectangula

Answer :

Given:

Length of rectangular sheet of paper = 40 cm


Breadth of rectangular sheet of paper = 28 cm


Radius of the semicircular cut out = 14 cm


Ques27.bmp


Area of rectangle = length × breadth


Area of rectangular sheet of paper = 40 × 28


= 1120 cm2


Area of semicircle = πr2


Area of semicircular cut out = × × 14 × 14


= 22 × 14 = 308 cm2


Thus, the area of remaining sheet of paper = Area of rectangular sheet of paper – Area of semicircular cut out


= 1120 – 308 = 812 cm2


Hence, the area of remaining sheet of paper is 812 cm2.

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