Question

the length and the breadth are in the ratio 3:2 . if it's perimeter is 30 m , find it's breadth​

Answer 1

Answer:

Let the ratio be 3x : 2x

A/q

Perimeter = 30 m

=> 2 ( l + b ) = 30

=> 2 ( 3x + 2x ) = 30

=> 6x = 30/2

=> 6x = 15

=> x = 15/6 = 2.5

Now,

Length = 3x = 3×2.5 = 7.5 m

Breadth = 2x = 2×2.5 = 5 m

Answer 2

Answer:

Step-by-step explanation:

Length=3x

Breadth=2x

Perimeter=30

Perimeter of rectangle=2(l+b)

30=(3x+2x)2

30=(5x)2

30=10x

x=3

Length=3×3=9

Breadth=2×3=6