1:30 * 20 * 50 *1/2 = 15000 (cubic centimeter) =15 (cubic decimeter)

2: 15 * 40 = 600 (cubic decimeter)

3: 15 * 365 = 5475 (cubic decimeter) = 5. 175 (cubic meter) The volume of garbage house is 5 * 3 * 1.2 = 18 (cubic meter) 5.1.

4:1500 *15 * 365 = 8212500 (cubic decimeter) = 82 12.5 (cubic meter)

82 12.5/ 18 = 456.25, accounting for 456.25 garbage houses.

5: 40 *15 * 365 = 2 1600 (cubic decimeter) = 216 (cubic meter)

2 16/4 = 54 (vehicle)