Question

the ratio of the lenght and the breadth of a rectangle is 4:3 and its area is 108sqcm.find its lenght

Answer 1

let, length=4x
and breath=3x
then,
(4x)×(3x) =108
12x^2 =108
x^2 = 108/12 =9
x =3
hence ,
length=4×3=12cm
breath=3×3 =9cm

I hope this will help you...