Answer: A) 3 times
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Step-by-step explanation:
Recall that from a previous screenshot you posted, that

If we multiply both sides by 3 and swap both sides, then we end up with

So that's why we need 3 cups of water, if each cup is the cone in the diagram. Keep in mind that the height of the cylinder and the cone must be same. The two radius values must be the same as well. You don't need to have r = h be true.