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From a sheet of cardboard in the shape of a square of side 14 cm, a piece in the shape of letter B is cut off. The curved side of the letter consists of two equal semicircles & the breadth of the rectangular piece is 1 cm. Find the area of the remaining part of cardboard. (Ans: 143.5 cm 2 )
Ans: Area of remaining portion = Area of square - Area of 2 semi circles - Area of rectangle
= 14 x 14 - Π x 3.52 - 14 x 1
=196 -22/7 x 3.5 x 3.5 - 14
=196 - 38.5 - 14 = 143.5 cm2
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