step 1
find the volume of a cylinder with height=30 cm
volume of a cylinder=pi*r²*h
r=14/2-----> r=7 cm
h=30 cm
so
volume =pi*7²*30-----> 4615.8 cm³
step 2
find the volume of a sphere
volume sphere=(4/3)*pi*r³
r=2/2----> 1 cm
volume sphere=(4/3)*pi*1³-----> 418.67 cm³
step 3
find the volume of water
volume of water=volume of a cylinder-volume of a sphere
volume of water=4615.8-418.67-----> 4197.13 cm³