Basic Math Examples

 $\begin{array}{r} l = & 10 \\ w = & 12 \end{array}$

Step 1

The perimeter of a rectangle is equal to the sum of all sides of the rectangle.

$l e n g t h + l e n g t h + w i d t h + w i d t h = 2 \cdot (l e n g t h) + 2 \cdot (w i d t h)$

Step 2

Substitute the values of the length $l = 10$ and width $w = 12$ into the formula for the perimeter of a rectangle.

$2 \cdot 10 + 2 \cdot 12$

Step 3

Simplify each term.

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Step 3.1

Multiply $2$ by $10$ .

$20 + 2 \cdot 12$

Step 3.2

Multiply $2$ by $12$ .

$20 + 24$

Step 4

Add $20$ and $24$ .

$44$