Perimeter of a square — lesson. Mathematics CBSE, Class 6.

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Now, we shall find the perimeter of a square.

Let

$ABCD$ be a square with sides of length

$a$

$units$ .

Then, the perimeter of the square

$ABCD$ is given by:

Perimeter of the square

$=$ Product of number of sides and its side length

Perimeter,

$P =AB+BC+CD+DA$

$units$

$P=a+a+a+a$

$units$

$P=4a$

$units$

Thus, the perimeter of the square is the product of its

$4$ sides and the side length.

Example:

1. Let the side of a square be

$8 \ cm$ . Find the perimeter of the square.

Solution:

Side of a square,

$a=8 \ cm$ .

Perimeter of the square

$=$ Product of number of sides and its side length

Substituting the values in the formula, we have:

Perimeter,

$P=4a$

$P=4\times 8 \ cm$

$P=32 \ cm$

Thus, the perimeter of the square is

$32 \ cm$ .

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3. Perimeter of a square