Question

the length of the rectangular field is three times its breadth if the breadth of the rectangle is 4.5 metre find the perimeter of the rectangle

Answer 1

Answer :-

• The perimeter of the rectangle = 36 m.

Given :-

• The length of a rectangular field is three times its breadth.

• The breadth of the rectangle is 4.5 m.

To find :-

• The perimeter of the rectangle.

Step-by-step explanation :-

• In this question, it has been given that the length of a rectangular field is three times its breadth and the breadth has been given. We have to find the perimeter of the rectangle, but for that we need to find the length first. After that, we can use the formula required for finding the perimeter of a rectangle and apply it to find the answer.

Calculations :-

Breadth of the rectangle = 4.5 m.

Now, since the length is three times the breadth of the rectangle,

Therefore, the length = 4.5 m × 3 = 13.5 m.

We know the length and the breadth of the rectangle now, so let's find out the perimeter.

We know that :-

$\underline{\fbox{Perimeter \: of \: a \: rectangle = 2 \: (L + B).}}$

Let's apply this formula now.

Substituting the given values in the formula,

$\tt Perimeter = 2 \: (13.5 + 4.5)$

Adding the numbers inside the brackets,

$\tt Perimeter = 2 \: (18)$

Removing the brackets,

$\tt 2 \times 18$

Multiplying the numbers,

$\underline{\fbox{\tt Perimeter = 36 \: m.}}$