Please Need Help. Thank You :)

Please find the Volume of these cylinders:

the one for the finding the height is 3.3, the one with 7 as the height is 351.86, and the one with 3 as the height is 150.8

Step-by-step explanation:

h=V

πr2=41.5

π·22≈3.30247

V=πr2h=π·42·7≈351.85838

V=πr2h=π·42·3≈150.79645

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i found two solutions,   n = 2 • ± √3 = ± 3.4641

step-by-step explanation: