Answer:
Total Volume: 444 in3
For B: 6 = h 4 = l 15 = w so.. 6 x 4 x 15 = 360
For A: 3 = h 7 = l 4 = w so.. 3 x 7 x 4 = 84 (use according measurements to find angles)
Therefore.. 360 + 84 = 444 in 3
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