Question

If the ratio of length to breadth of a rectangle is 5:3 and its perimeter is 144 m, calculate its length ?​

Answer 1

Answer:

45 meters

Step-by-step explanation:

Let 'l' be the length and 'b' be the breadth.

Given that, the ratio of its length and breadth is 5 : 3.

Therefore, we take length as 5x and breadth as 3x.

Perimeter of rectangle = 2 ( l + b )

⇒ 144 = 2 ( 5x + 3x )

⇒ 8x = 72

⇒ x = 72 / 8

⇒ x = 9

So, the length of rectangle is 5 x = 5 × 9 m = 45 m  

Also, the breadth of rectangle is 3 x = 3 × 9 m = 27 m