Solution: the first question: the volume is the bottom area multiplied by the height. The bottom diameter is 3.5, and the height is1m. Using the formula, the volume can be obtained as (3.5/2) * (3.5/2) * 3.14 = 9.61625 (m? ) (pi is 3. 14, the same below)

Question 2: As long as lateral area is connected with the bottom area, the bottom area is 3.0625, and lateral area is (3.5/2) * 3.14 *1= 5.495, which is 8.5575㎡, so it takes 8.5575 * 500 = 4,278.75 (block

The third question: lateral area of the previous question remains unchanged, and the new building area is 12.56, while the larger lateral area is 12.56, * * * is 30.615m2, and 30.615 * 5 =/kloc-.

Question 4: The first question multiplied by 80% is 7.693m? 7.693 tons.

The numerical calculation of this problem is quite complicated. I don't know if there is any mistake. I hope I can help you.