Question

The length of a rectangle of perimeter 64 cm is 5/3rd of its breadth. Find the area of the rectangle?

Answer 1

let b=x
length=5/3x
ATQ
64=2(l+b)
64=2(5/3x+x)
64=2×8/3x
64/2=8/3x
32=8/3x
32×3/8=x
x=12
length=5/3×12
= 20

Answer 2

breadth = 12 cm
length = 20cm