Answer:
364.5 m³
Explanation:
Volume = base area × height
Base area: ½(7+11)×4.5
9×4.5
40.5 m²
Volume: 40.5 × 9
volume = height * are of the trapezoidal = 9 * (7+11)*4.5 / 2 = 364.5 m3
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