Question

Each side of a regular polygon is $2.5cm$ in length. the perimeter of a polygon is $12.5cm$ how many sides does a polygon have?

Answer 1

To find the number of sides we have to divide $12.5cm$ by $2.5cm$

Now, $12.5÷2.5=\frac{125}{10}÷\frac{25}{10}$

$$\begin{gathered} =\frac{\sout{{125}^5}}{\sout{10}}\times \frac{\sout{10}}{\sout{25}} \\ =5 \end{gathered}$$

Hence, $5$ sides are present in the polygon.