Maths The length of a hollow iron pipe is 1 meter and its inner width is 3 cm, it is made of 1 cm pearl iron sheet, if the weight of 1 cubic cm of iron is 21 grams, then what is the weight of this pipe?
| Q.202141: The length of a hollow iron pipe is 1 meter and its inner width is 3 cm, it is made of 1 cm pearl iron sheet, if the weight of 1 cubic cm of iron is 21 grams, then what is the weight of this pipe? |
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