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You want to siphon rainwater and melted snow from the cover of an above-ground swimming pool. The cover is 2.1 m above the ground. You have a plastic hose of 1.5 cm radius with one end in the water on the pool cover and the other end on the ground.
If you want to empty the pool cover in half the time, how much wider should the hose be?
Sagot :
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