Question

The length of a rectangular hall is 3 metres more than double of its breadth. If its perimeter is<br />60 metres, what is its length?​

Answer 1

Answer :-

• Length of the rectangle is 21m.

Given :-

• The length of a rectangular hall is 3 metres more than double of its breadth and its perimeter is 60m.

To Find :-

• Length of the rectangular hall.

Solution :-

It's given that the length of the rectangular hall is 3m more than double of it's breadth. Let's assume that breadth is equal to x. Perimeter is 60m.

Let

• Breadth = x
• Length = 2x + 3

As we know that

• Perimeter of a rectangle is → 2 (l + b)

Where,

• l = length
• b = breadth

According to question :-

2 (x + 2x + 3) = 60

→ 2 (3x + 3) = 60

→ 3x + 3 = 60/2

→ 3x + 3 = 30

→ 3x = 30 - 3

→ 3x = 27

→ x = 27/3

→ x = 9

Hence,

• Breadth of the rectangle = x = 9m
• Length of the rectangle = 2x + 3 = 21m