Area of a trapezium shaped field is 450m square, the distance between two parallel sides is 25m. One of the parallel sides is 20m one of the parallel side is 20m. Find the other parallel side?
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450 = 1/2× 25 (20+b)
900 =500+25b
400 = 25b
b = 16
900 =500+25b
400 = 25b
b = 16
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