I think it is equivalent to 16
hope that helps! :)
So for this, you'll be using the pythagorean theorem to solve for the height.

Solve the exponents to get

Subtract 81 on each side to get

Square root each side, and your answer should be

or 13.23 ft
If its a 90 degree then the answer is 68
if its a 180 degree then the answer is 158
if its a 270 degree then the answer is 248
if its a 360 degree then the answer is 338
The area of a square is A=s^2
We already have the area, so we solve for the side length:
169=s^2
13=s
The perimeter of a square is P=4s
We plug in 13 for s:
P=4(13)
P=52
So the perimeter of the square is 52 m^2
Hope this helped!
Is that the whole probkem?