the length of a rectangle is 20m less than twice it's breadth. lf the perimeter of the rectangle is 80m, find its dimensions.
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2(l + b) = 80
b = x
l = 2x - 20
2 (2x - 20 + x) = 80
6x - 40 = 80
x = 120/6 = 20
breadth = 20m
length = 2x - 20 = 40 - 20 = 20m
shahi62:
Sorry but your answer is wrong
Oh! then what is the answer?
2(20 + 20) = 80
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