Question

Sides of a rectangle are in ratio 7:3 if its perimeter is 490m find its area.

Answer 1

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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