The answer is 3,072.
Heres how I got it:
SA of a CUBE: s^3 * 6
Lets plug in our numbers-
8 * 8 * 8= 512 * 6
512 * 6= 3072
Answer:
144-36=108
Square root 108 = 10.4cm (cb)
Soh Cah toa
Sin(55) =o/h
=10.4/h
xh
H x sin55 =10.4
÷sin55
H= 10.4/sin55
H=12.7cm
CD is 12.7cm to 3 s.f.
28 on top and 15 in the bottom so 28 15