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The diameter of the bottom of a cone is 20 decimeters, the height is 9 decimeters, and its volume is 1______ Cubic decimeter
Solution: 13 × 3.14 × (20 △ 2) 2 × 9, = 13 × 3.14 × 100 × 9, = 942 (cubic decimeter); answer: its volume is 942 cubic decimeter; so the answer is: 942
Judgment: the volume is 40 liter small oil tank, its volume is bigger than 40 cubic decimeter
This is one of our judgments in the sixth grade monthly exam. Some people say it's right and some people say it's wrong. I want to ask for opinions. Please judge carefully,
Of course, yes
Volume refers to the volume inside the container, and volume is calculated from the outside of the container
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