5625 m^2
If is is square, all sides must be congruent (all sides are 75m). To find area, you multiply width x length (how long). Therefore:
75m x 75m = 5626 m^2
I think A, but im not 100% sure
(p>64) divided by 4 is less than or equal to w
R/2-6=14
r/2=20
r=40
The answer is 40