Dig water well
Mr. Zeman is digging a well. Its diameter is 120 cm, and it plans to be 3.5 meters deep. How long (at least) must be a ladder, after which Mr. Zeman would have eventually come out?
Correct answer:
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You need to know the following knowledge to solve this word math problem:
planimetricsUnits of physical quantitiesGrade of the word problem
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