Question

The side of a rectangular pentagon is denoted by $\mathrm{I}$. Express the perimeter of the pentagon using the variable $\mathrm{I}$

Answer 1

A regular pentagon is a polygon where all the sides are equal.

Perimeter $=\mathrm{I}+\mathrm{I}+\mathrm{I}+\mathrm{I}+\mathrm{I}$

$=5\mathrm{I}$

Hence the perimeter of given pentagon is $=5\mathrm{I}$