The perimeter of a regular pentagon is \( 100 \mathrm{~cm} \). How long is its each side?

Given:  

The perimeter of a regular pentagon is $100\ cm$.

To do:

We have to find the length of its each side.

Solution:

The perimeter of a regular pentagon with each side measuring $a$ is $5a$.

The perimeter of the regular pentagon $ =100\ cm$

Therefore,

$5\times$ each side of the pentagon $ = 100\ cm$

Each side of the pentagon$ = \frac{100\ cm}{5}$

$ =20\ cm$

The length of each side of the pentagon is $20\ cm$.

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Updated on: 10-Oct-2022

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