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Volume = length × width × depth. Convert inches to feet (divide by 12) before multiplying; divide cubic feet by 27 for cubic yards. Gravel density varies: pea gravel ≈ 1.4 t/m³; crushed stone ≈ 1.5–1.7 t/m³. Add 10–15% for settling and waste. A 4-inch layer is typical for driveways; 2–3 inches for paths and beds. Compacting after installation prevents sinking.
~1.85 yd³