圆锥体V1 =S1 * H * 1/3
圆柱体V2 =S2 * H
V1:V2 =3:4
V1 3
--- = ----
V2 4
S1*H*1/3 3
---------- = ----
S2*H 4
S1 3
--- = ---
S2*3 4
S1 9
--- = ---
S2 4
底面积的比是9:4
圆锥体V1 =S1 * H * 1/3
圆柱体V2 =S2 * H
V1:V2 =3:4
V1 3
--- = ----
V2 4
S1*H*1/3 3
---------- = ----
S2*H 4
S1 3
--- = ---
S2*3 4
S1 9
--- = ---
S2 4
底面积的比是9:4