The area of a polygon with 'n' sides and length of each side 'a' is 'na'.

(n + 1)a

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(n - 1)a

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Solution

The correct option is A
(n + 1)a

A regular polygon has all sides equal in length. Therefore if such a polygon has 'n' sides and length of each side is 'a' units, its perimeter will be:
Perimeter = a + a + a + a... (n times) = na

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