Question

The ratio of length and breadth of a rectangle is 3:1 and its perimeter is 36 cm Find tbe lenth and breadth of rectangle

Answer 1

Hi Sir / Madam

Let the length and breadth be 3x and 1x

Perimeter = 2 × ( L + B )

36 = 2 × ( 3x + x )

36 = 2 × 4x

x = 36 / 8

x = 4.5 cm = Breadth

Length = 3x = 3 × 4.5 = 13.5 cm

☺☺☺

Answer 2

let the length be 3x 

and breadth be x

________________________________________________________________________________________________________________________

perimeter of rectangle = 2(length+ breadth)

perimeter of rectangle = 2(3x+x)


Now,


36 = 2(4x)

36 = 8x 

36/8 = x 

4.5 cm = x


Then,

breadth  = 4.5 cm 

Length = 3*4.5 = 13.5cm


 i hope this will  help you

-by ABHAY