Question

If the length and the breadth of a rectangle are in the ratio 3 : 2 with its perimeter as 20 cm, then the area of the rectangle will be

Answer 1

let the length(l) be 3x and the breadth (b) be 2x
now,
perimeter of the rectangle=20cm
=>2(l+b)=20
=>2(3x+2x)=20
=>2×5x=20
=>10x=20
=>x=20/10
=>x=2
therefore, l=3*2=6cm
b=2*2=4cm