Answer:
2695ft^3
Step-by-step explanation:
3ft x 28ft x 14ft = 1176ft^3
(10ft - 3ft)(28ft - 8ft - 11ft)(14ft) / 2 = 441ft^3
(10ft - 3ft) x 11ft x 14ft = 1078ft^3
1176ft^3 + 441ft^3 + 1078ft^3 = 2695ft^3
