Sides of a rectangle are in ratio 7:3 if its perimeter is 490m find its area.
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Answer:
let the ratios be 7x and 3x
we know that
perimeter of rectangle= 2(l+b)
490m. = 2 (7x+3x)
490/2m. = 10x
245m = 10x
245/10 m = x
24.5 = x
therefore 7x = 24.5* 7 = 171.5
3x = 24.5*3 = 73.5
area = l*b
= 171.5*73.5
= 12,605.25
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