Question

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

Answer 1

Perimeter of regular pentagon = $100$ $cm$
$\Rightarrow 5 \times side = 100$ $cm$
$\Rightarrow Side = \frac{100}{5}$ = $20$ $cm$

Thus, the side of regular pentagon is $20$ $cm$.