How do i find the perimeter of a polygon?

Add up the lengths of the several sides of the polygon.

Examples: The perimeter of a triangle is the sum of the lengths of the 3 sides.

The perimeter of a hexagon is the sum of the lengths of the 6 sides.

And so on.

I highly recommend drawing any polygon whose perimeter you wish to calculate.

irrational, cannot

the answer is y = 11.54

hope this : )