The measure of each angle of regular polygon is `108^@`. Find perimeter of that polygon if each side measures 7 cm.

Explanation

Sum of interior angles of a `n`-sided polygon is `(n-2)**180`.

Here, interior angle is `108^@`.

`:. 108n = (n-2)**180`

`=>108n = 180n-360`

`=>72n = 360`

`=> n = 5`

So, given polygon has `5` sides.

Side of the polygon ` = 7cm`.

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