I need answer soon!
Find the side of the square...that is equal to AD
s^2 +s^2 = 26^2
s^2 = 26^2 / 2
s = ~18.4 cm = AD
Area of square - 1/4 circle area (radius = 18.4)
18.4 * 18.4 - 1/4 pi (18.4)^2 = .......... cm^2
+36915 
