1) A 540 in^3
2) H 420in^3
3) 0.336 ft^3
for these first three the work you can show is just the three numbers multiplied together
4) T 240 in^3
5) U 126 ft^3
6) I 176 cm^3
for these just write 1/2a * c * h
a is the first number, c is the second number, and h is the third number
These are all I can help you with because I have homework to do
Hope this helps :)