Question

the perimeter of a rectangular is 180m and its area is 1800 m take the length and write equation x

Answer 1

Given : perimeter, 2(a+b) = 180 m
And, Area, a×b = 1800 m^(2)

If a = x
then, 2(x+b) = 180 m

b = (180 - 2x)/2

Now, a×b = x×(180 - 2x)/2 = 1800

[180x - 2x^(2)]/2 = 1800

180x - 2x^(2) - 3600 = 0

Equation = 2x^(2) - 180x + 3600


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