Question

The length and the breadth of a rectangle are in the ratio 3 : 1. If the breadth is 7 cm then the area of the rectangle is____​

Answer 1

Answer:

There is your solution..

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Answer 2

Answer :-

• The area of the rectangle is 147 cm².

Given :-

• The length and breadth of a rectangle are in the ratio 3 : 1.

• The breadth is 7 cm.

To find :-

• The area of the rectangle.

Step-by-step explanation :-

• It has been given that the length and breadth of a rectangle are in the ratio 3 : 1. The breadth of the rectangle is 7 cm and we have to find the area. But for this, we have to find the length of the rectangle as well. So let's do it!

Calculations :-

• The length and breadth of the rectangle are in the ratio 3 : 1.

• So, let the length be 3x and the breadth be x

• Here, it has been given that the breadth is 7 cm, so that means x = 7 cm.

• Now, let's use this information to find the length as well.

$\sf Length = 3x = 3 \times 7 \: cm = 21 \: cm.$

• We know the length now, so let's find the area of the rectangle.

We know that :-

$\underline{\boxed{ \sf Area \: of \: a \: rectangle = Length \times Breadth.}}$

Here,

• Length = 21 cm.
• Breadth = 7 cm.

So,

$\tt Area = 21 \times 7$

$\boxed{\tt Area = 147.}$

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• So, the area = 147 cm².