Question

12) Length and breadth of a rectangular field are 120 m and 60m respectively.
There is a square field of side 80m. Find the ratio of their perimeters.​

Answer 1

Answer:

Length and breadth of a rectangular field =2×(l+b)

2×(120m+60m)

2×(180m)

360m

The side of square field =4×sides

4×80=320

the ratio of filed = 360-320=40mAns

Answer 2

Answer :-

Ratio of their Perimeters = 9 : 8.

Explanation :-

Given :

• Length of Rectangular field = 120m.
• Breadth of Rectangular field = 60m.
• Side of Square = 80m.

To Find :

• Ratio of their perimeters.

Solution :

We know that,

Perimeter of Rectangle = 2(l + b).

Perimeter of Square = 4 × side.

First, let's calculate the Perimeter of Rectangle.

⇒ Perimeter of Rectangle = 2(l + b).

⇒ Perimeter of Rectangle = 2(120 + 60).

⇒ Perimeter of Rectangle = 2(180).

⇒ Perimeter of Rectangle = 360 m.

Now, Calculating Perimeter of Square.

⇒ Perimeter of Square = 4 × side.

⇒ Perimeter of Square = 4 × 80.

⇒ Perimeter of Square = 320 m.

We have to calculate the ratio between them.

⇒ Perimeter of Rectangle/Perimeter of Square.

⇒ 360/320.

⇒ 36/32.

⇒ 9/8.

Therefore, Ratio between them = 9 : 8.