Question

The number of diagonals of a polygon having 22 sides is:



a. 190



b. 189



c. 219



d. 209

Answer 1

HEYA MATE,

Here is your answer

FORMULA : The formula to calculate the number of Diagonals of a Polygon is $\frac{n(n-3)}{2}$  where n is number of sides of polygon.

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ANSWER : So, after applying this Formula , we get diagonals = 209.

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HENCE, The Correct Option is OPTION D].

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HOPE THIS HELPS!!!!!