A cylinder
A cylinder 108 cm high has a circumference of 24 cm. A string makes exactly six complete turns around the cylinder while its two ends touch the top and bottom. (forming a spiral around the cylinder).
How long is the string in cm?
How long is the string in cm?
Correct answer:
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Dr Math
Finding the length of the string is the same as finding the length of the hypotenuse of a triangle with a height of 48 cm and a base of a number of turns*circumference
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You need to know the following knowledge to solve this word math problem:
- algebra
- expression of a variable from the formula
- solid geometry
- cylinder
- planimetrics
- Pythagorean theorem
- right triangle
- circle
- perimeter
- basic functions
- reason
Units of physical quantities:
Grade of the word problem:
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