Question 478265
That would be the formula for the surface area for a Right Rectangular Prism.
S = 2(ab + ac + bc)

a = 89
b = 90
c = 96

ab = 8010
ac = 8544
bc = 8640

 8010 + 8544 + 8640  = 25194

SA = 2 (25194) = 50388 sq inches
Cleomenius.