Answer:
8xy
Step-by-step explanation:
b
n
TU= 4 mm
a^2+b^2=c^2
3^2+b^2=5^2
9+b^2=25
b^2=16
b=4
294
since the area is 7^3, the cube's side length is 7
SA = 6*7^2 = 294