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There is a kind of beverage bottle with a cylindrical body (excluding the bottle neck) and a volume of 30 decimeters. 3. Now there are some drinks in the bottle. The height of the drink is 20 cm when it is placed upright, and the height of the rest part is 5 cm when it is placed upside down. (see Figure) the existing drinks in the bottle are () cubic decimeters A. 20B. 21C. 22D. 24
30 × 2020 + 5 = 30 × 45 = 24 (cm3) a: there are 24 cm3 drinks in the bottle
There is a drink bottle with a volume of 3 liters. Its body is cylindrical (excluding the bottle neck). Now the height of the drink in the bottle is 20 cm, and the space left when it is inverted is 5 cm,
How many liters of drink is in the bottle
It is estimated that this is a primary school problem, so algebraic calculation is not suitable
According to the meaning of the title, the height of a 3-liter drink in the bottle is 20 + 5 = 25 cm, from which the volume of a 20 cm high drink can be obtained
20 △ 25 × 3 = 2.4 (L)
A: the volume of the drink in the bottle is 2.4 liters
The volume of a beverage bottle is 3 liters, and its body is cylindrical (excluding the bottle neck). Now there are some drinks in the bottle. The height of the drink is 20 cm when it is placed upright, and the height of the rest part is 5 cm when it is placed upside down. How many liters of drinks are there in the bottle?
If the area of the bottom of the bottle is x cm ^ 2, according to the topic
20x = 3000ml-5x (equal volume of beverage)
The solution is x = 120cm ^ 2
The results show that v = 120 * 20ml = 2400ml = 2.4L
The problem is so simple
The volume of a bottle is 3 cubic decimeters. When the bottle is placed upright, the height of the drink is 20cm. When the bottle is placed upside down, the height of the rest of the bottle is 5cm
3 cubic decimeter = 3000 cubic centimeter
Lack of conditions, this bottle should be irregular
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