Answer:
92 cubic ft
Step-by-step explanation:
Left cube:
length = (12 - 7) = 5 ft
width = 2 ft
Height = (5 - 3) = 2ft
Volume of left cube = length * width * height
= 5 * 2 * 2
= 20 cubic ft
Right cube:
length =12 ft
width = 3 ft
Height = 2ft
Volume of right cube = length * width * height
= 12 * 3 * 2
= 72 cubic ft
Volume of figure = 72 + 20 = 92 cubic ft
