Question

a rectangle has the perimeter 300 m square find its area if the length of the rectangle is 20 m

Answer 1

Let the breadth be x m,then perimeter of the rectangle=2(l+b) units =2(20+x) m=40+2x m
ATP...
40+2x=300 =>2x=300-40 =>2x=260 =>x=260/2 =>x=130
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