Question

What is the perimeter of a rectangle with sides of $12inches$ and $18inches$ ?

Answer 1

Hint: Here in this question we have been asked to find the perimeter of a rectangle having the length of its sides given as 12 inches and 18 inches. For answering this question we will be using the formula for finding the perimeter of the rectangle is given as $2\left( l+b \right)$ where $l$ is the length and $b$ is the breadth.

Complete step by step answer:
Now considering from the question we have been asked to find the perimeter of a rectangle having the length of its sides given as 12 inches and 18 inches.
From the basic concepts we know that perimeter is the total length of boundaries of any shape. We know that a rectangle has 4 sides, in which opposite sides are equal and parallel. So we can say that in total the boundary length that is the perimeter will be the sum of all the four sides that is the 2 times of the sum of the length of the two different sides.
We are aware of a formula for finding the perimeter of the rectangle is given as $2\left( l+b \right)$ where $l$ is the length and $b$ is the breadth. We are going to use this formula in our case.
By using this formula we will have $\Rightarrow 2\left( 12+18 \right)$ by further simplifying this we will have $\Rightarrow 2\left( 30 \right)=60inches$ .

Therefore we can conclude that the perimeter of a rectangle having the length of its sides given as 12 inches and 18 inches will be given as 60 inches.

Note: Similarly someone can find the area and perimeter of any shape like square and many more. Very few mistakes are possible in questions of this type like calculation mistakes for example consider if someone has taken $\Rightarrow 2\left( 12+18 \right)=2\left( 40 \right)=80$ this will lead them to end up having a wrong conclusion.