Practical questions: ① A rectangular reed mat with a length of 9.42 meters and a width of 6.28 meters is enclosed to form a grain storage bin. There are several different enclosure methods? What's the maximum volume? (the joint is not included) (the number obtained remains the whole cubic meter) ② A cone-shaped sand beach is 12.56 meters long and 9 meters high. How long can it be paved on a 5-meter-wide road with 2 cm thick sand? ③ A cylinder has a base area of 62.8 square centimeters and a height of 8 centimeters. A cone has the same volume and base area as it. What is the height of the cone? Fill in the blanks: ① A cylinder and a cone are of equal height and equal bottom. The sum of their volumes is 64 cubic decimeters, and the volume of a cone is () cubic decimeters? Judgment questions: ① The volume of a cone and a cylinder are equal, the area of the bottom is equal, and the cone is two-thirds higher than the cylinder

Practical questions: ① A rectangular reed mat with a length of 9.42 meters and a width of 6.28 meters is enclosed to form a grain storage bin. There are several different enclosure methods? What's the maximum volume? (the joint is not included) (the number obtained remains the whole cubic meter) ② A cone-shaped sand beach is 12.56 meters long and 9 meters high. How long can it be paved on a 5-meter-wide road with 2 cm thick sand? ③ A cylinder has a base area of 62.8 square centimeters and a height of 8 centimeters. A cone has the same volume and base area as it. What is the height of the cone? Fill in the blanks: ① A cylinder and a cone are of equal height and equal bottom. The sum of their volumes is 64 cubic decimeters, and the volume of a cone is () cubic decimeters? Judgment questions: ① The volume of a cone and a cylinder are equal, the area of the bottom is equal, and the cone is two-thirds higher than the cylinder

Beautiful girl 3, Hello: application questions: 1. A rectangular reed mat 9.42 meters long and 6.28 meters wide is enclosed to form a grain storage bin. There are several different enclosure methods? What is the maximum volume? (excluding the joint) (the number obtained is reserved for the whole cubic meter). The first enclosure method: 3.14 × (9.42 △ 3.14 △ 2) ^ 2 × 6.28 = 44