Perimeter of a square — lesson. Mathematics State Board, 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 \(=\) Sum of the measures of all four sides

Perimeter, \(P =AB+BC+CD+DA\) \(units\)

\(P=a+a+a+a\) \(units\)

\(P=4a\) \(units\)

Thus, the perimeter of the square is \(4a\) \(units\).

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 \(=\) Sum of the measures of all four sides

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 \(32 \ cm\).

Did you find an error?

3. Perimeter of a square