The equation d=1/2n (n-3) gives the number of diagonals d for polygon with n sides. use this equation to find the number of sides n for a polygon that has 65 diagonals

 13

Step-by-step explanation:

Given : The equation gives the number of diagonals d for polygon with n sides.

To find the number of sides n for a polygon that has 65 diagonals, we substitute the value of d= 65 in the given equation, we get

Multiply 2 on both sides , we get

But number of sides cannot be negative, so the number of sides n for a polygon that has 65 diagonals = 13

d 192

step-by-step explanation:

we find our area to find area we multiply thoses numbers to get our answer so our area is 192

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step-by-step explanation: