Question

A $40cm$ long wire is used to form a regular pentagon. Each side of the pentagon is __________ $cm$.

Answer 1

Let each side of the regular pentagon be $a$

$\mathrm{Perimeter}\mathrm{of}\mathrm{regular}\mathrm{pentagon}=5\times \mathrm{side}$

Perimeter of the pentagon = Length of the wire

$\Rightarrow 5\times a=40$

$\Rightarrow a=\frac{40}{5}$

$\Rightarrow a=8cm$

Hence , Each side of the pentagon is $8cm$