Question

Tell me the answer fast by the full method
Two adjacent sides of a rectangle are in the ratio of 2:5 =. If the perimeter of the rectangle is 140cm, find the sides of the rectangle.

Answer 1

Answer:

let one side =2x

2nd side =5x

2(2x+5x)=140

14x=140

x=10

one side =10*2=20

2nd side =5*10=50

Answer 2

Given: Perimeter of Rectangle =140cm

Ratio of sides =2:5,

so let length=2x, breadth=5x

Perimeter of Rectangle =2(l+b)

∴2(2x+5x)=140

7x=70

x=10

∴length=20, breadth=50

∴ sides of rectangle =20cm,50cm