tolong besok dikumpul!!

3) 885,5-115,5=770
v.silinder = v. tabung
v.tab = phi.r².t
770 = 22/7 . 3,5 . 3,5
770 = 38,5 . t
t = 770/38,5
t = 20
4) 2.2198=4396
5652-4396=1256
v.kerucut = 1/3.phi.r².t
1256 = 1/3.3,14.10².t
1256 = 1/3.314.t
1256 = 314/3.t
t = 3/314.1256
t = 12
semoga membantu ^_^