A cylinder has radius 4 and height 10. If the radius is tripled but the height stays the same, by what factor does the volume increase?

A3

B6

C9

D27

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A cylinder has radius 4 and height 10. If the radius is tripled but the height stays the same, by what factor does the volume increase? r = 4, h = 10→r × 3r = 12, h = 10× ?