Answer:
The answer is 420 cubic inches
Step-by-step explanation:
420
136 ft²
floor = 7 x 6 = 42 ft²
sides = 2 x 7 x 5 = 70 ft²
ends = 1/2 x 6 x 4 x 2 = 24 ft²
42 + 70 + 24 = 136 ft²
Add -3 and 7. 4
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