Find the missing lengths of the sides.
A) a = 6^3 ft, b = 6^3 ft
B) a = 12 ft, b = 12 ft
C) a = 6 ft, b = 6 ft
D) a = 6 ft, b = 6^2 ft
![Find the missing lengths of the sides A a 63 ft b 63 ft B a 12 ft b 12 ft C a 6 ft b 6 ft D a 6 ft b 62 ft class=](https://us-static.z-dn.net/files/dc9/d87c9ef9d8b9c987e533ef7f32bbbab0.png)