Question

The perimeter of a regular pentagon is 100 cm. How long is each sides?

Answer 1

A regular pentagon is a closed polygon having five sides of equal length.
Perimeter of the regular pentagon = 100 cm
Perimeter of the regular pentagon = 5 $\times$ Side of the regular pentagon
Therefore, side of the regular pentagon = $\frac{Perimeter}{5}$ = $\frac{100}{5}$ = 20 cm