Question

The side of a regular polygon is $2.5$cm. If the perimeter of the polygon is $15$cm. then find the number of the sides of the polygon.

Answer 1

length each side of a regular polygon $=2.5cm$

perimeter of polygon $=15cm$

no. of sides of the regular polygon $=\frac{perimeter}{sidelength}$

$=\frac{15}{1.5}=6$

$\therefore$ it is a $6$ sided regular polygon

$\Rightarrow$ regular hexagon