helppppp Volume of cylinder

Question

1 Radius 3cm height of 5cm

Volume= 45 pie cm Squared

a.      If you wanted more volume in your cylinder, which of these two ideas would give the most Volume:

                                                              i.      Doubling the radius to 6 cm, while the height remains 5 cm

OR

                                                            ii.     Tripling the height to 15 inches, while the radius remains 3cm

Answer 1

Doubling the radius will increase a Volume in 4 times, tripling the height in 3 times, hence, choose an idea 1.