= 1/3 ×(3. 14×2×2)×6 = 1/3×(3. 14×(3÷2)×(3÷2))×3

= 1/3×6×(6.28×2) = 1/3×3×(3. 14× 1.5× 1.5)

=2× 12.56 = 1×(4.7 1× 1.5)

=25. 12 (cubic centimeter) = 1×7.065

=7.065 (cubic centimeter)

Sandpile tonnage: v =1/3s× h =1/3× (3.14× (4÷2 )× (4÷2) )×1.5.

= 1/3× 1.5×(3. 14×2×2)× 1.5

=0.5×(6.28×2)

=0.5× 12.56

=6.28 cubic meters

6.28×1.7 ≈11(ton)

It better be true! ! ! (* _ _ *) Hee hee ...