Answer:
You find the area first
L x W of the rectangle only.
To find volume : you find the depth of the square and multiply this by the area above.
Whatever the number is you add 'unit sq'
Lets say the rectangular prism measured L12 units x W6units x D4units
A =72unit square
V = D4 x A72 = 4 x 72 = 288unitsq cubes
Step-by-step explanation: