ABCD is a square field of side 80m. If EF is perpendicular to DC, find the area of ∆EDC. Also, find the area of the shaded portion
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angle pdc1 by 2 into 1820 equal 3200
square area of shaded portion area of a square minus
(80 ×80) equal to - 3200
6400-3200
3200 ans...
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