1. Find the shaded area in the following figure
(i)
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area of the shaded region
=area of the square-area of the two unshaded region(one right angle triangle+one quadrilateral)
={40×40-(1/2.15.30 +1/2.20.40+1/2.10.40)} sq cm
={1600-(225+400+200)}sq cm
=(1600-825)sq cm
=775 sq cm
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