Washer
The washing machine drum washes at 71 RPM. The washing machine motor pulley has a diameter of 8 cm. What must be the diameter of the drum machine pulley when the motor is at 351 RPM?
Correct answer:
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You need to know the following knowledge to solve this word math problem:
- planimetrics
- circle
- perimeter
- basic functions
- ratio
- reason
- inverse relationship
- direct relationship
- numbers
- fractions
Units of physical quantities:
Grade of the word problem:
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