6 × 11 = 66 ft^2 which is the area of the base, so 66 × 9 = 594 ft^3 which is answer A. I hope this helps! Let me know if you need a further explanation :)
AP and PB should add to AB
(2x-9)+(1.5x+6)=32
2x-9+1.5x+6=32
3.5x-3=32
3.5x=35
x=10
Plug this value of x in
1.5(10)+6
15+6
21
Final answer: 21
Check the picture below.
ok, notice the volume of the smaller cube forming the larger cube. Keeping in mind that the larger cube has 90 of those small ones.
Answer : 64b^2 - 4
Hope that helps. If you need me to explain how I got my answer I will provide a picture.