Respuesta :

7/2= radius (3.5)
V=πr2^h
V=
π3.52*12
V= 461.81 
Height = 12 cm.

Diameter = 7cm,  radius = 7/2 = 3.5 cm

Volume of Cylinder = πr²h  = π*3.5²*12 = 147π
 
                                                                 ≈ 461.8 cm³

Second option from top.