please kasih tau ya:)

9.v=πR²xt
    =22_7×14×14=616
    =616×20=12320cm³
10.v=πr²xt
=22_7x7x7=154cm³
11.v=πr²xt
=22_7x14x14=616
=616x10=6160
12.v=πr²xt
=3,14x10x10=314
=314x50=15700
sisanya gak tau ._.