Question

find the perimeter of a square whose side is 9cm

Answer 1

Perimeter = Sum of lengths of all the sides 

In a square, all the sides are of equal length. Hence,

Perimeter = 9 + 9 + 9 + 9 = 9 x 4 = 36 cm 

Answer 2

Answer:

Hence the perimeter of the square is 36cm.

Step-by-step explanation:

As per the data given in the above question,

The data given is side of a square is 9cm,

We have to find the perimeter of a square,

Here we have to use the formula of perimeter of square that is,

$P=4a$

Where a is the side of the square,

Given a = 9 cm,

Substitute the value of side in the above formula of perimeter of the square we get,

$P=4\times9\\P=36cm$

Hence the perimeter of the square is 36cm.