1. Which brand of packaged milk is more cost-effective? Brand volume price / yuan Yili 3 L 20 Mengniu 2000 ml 18.6 2. A cuboid container, the bottom of which is 3 decimeters long and 3 decimeters wide. 1. After putting a stone (completely immersed), the water surface rises by 0.3 decimeters. What is the volume of this stone? 3. There is a 15 cm long and 10 cm wide rectangular glass container with some water in it. If you put four eggs (simply immerse them in water), and the water surface rises by 2 cm, what is the average volume of each egg? The above is the title of the mathematics guidance series P26 and p27 1. The ice used in Harbin Ice and snow world can melt into 80000 cubic meters of water every year. How many swimming pools are they equal to the storage capacity of 50m long, 25m wide and 1.2m deep? This is question 11 in math book P54 We need answers at 10 p.m

1. Which brand of packaged milk is more cost-effective? Brand volume price / yuan Yili 3 L 20 Mengniu 2000 ml 18.6 2. A cuboid container, the bottom of which is 3 decimeters long and 3 decimeters wide. 1. After putting a stone (completely immersed), the water surface rises by 0.3 decimeters. What is the volume of this stone? 3. There is a 15 cm long and 10 cm wide rectangular glass container with some water in it. If you put four eggs (simply immerse them in water), and the water surface rises by 2 cm, what is the average volume of each egg? The above is the title of the mathematics guidance series P26 and p27 1. The ice used in Harbin Ice and snow world can melt into 80000 cubic meters of water every year. How many swimming pools are they equal to the storage capacity of 50m long, 25m wide and 1.2m deep? This is question 11 in math book P54 We need answers at 10 p.m

one
2000 ml = 2 liters 18.6 △ 2 = 9.3 yuan
20 △ 3 ≈ 6.6 (yuan) 6.6 yuan ＜ 9.3 yuan Yili is cost-effective
two
3 × 1.5 × 0.3 = 1.35 cubic decimeter
three
2 △ 4 = 0.5cm
15 × 10 × 0.5 = 75 CC
one
80000 m3 = 80000 M3
80000 ÷ (50 × 25 × 1.2) ≈ 53