10 + 8 + 0.6 + 0.04 = 18.64
Answer:
I don't understand the first one
V=hpir^2
I will assume that the first one is the one with radius 16 and height 40
2nd is radius 7 and height 26
1. v=hpir^2
v=40pi16^2
v=40pi256
v=10240pi cubic inches
3rd option
2.
v=hpir^2
v=26(3.14)7^2
v=26(3.14)(49)
v=1274(3.14)
v=4000.36 cubic cm
1st option
The answer is 8/10. If you multiply it by two (top and bottom) then you will get 8/10.