Cone: 18.84×3÷ 15=3.768 (cm)

A: His height is 3.768 cm.

2. Cylinder: 3.14× (12.56 ÷ 3.14 ÷ 2)? ×6=75.36 (cubic centimeter)

Length: 12.56÷3. 14=4 (cm)

Cuboid: 4×4×6=96 (cubic centimeter)

Cut-off value: 96-75.36=20.64 (cubic centimeter)

A: The volume of the truncated part is 20.64 cubic centimeters.

3. Cone:1/3× 3.14× (12.56 ÷ 3.14 ÷ 2)? ×0.6=2.5 12 (m3)

Total weight: 2.5 12× 1.5=3.768 (ton)

Specific dimensions: 3.768 & gt III

A: The existing sand is enough.