tentukan volumenya.. #tolong ya kakaakk

b) t=24cm r=7 phi=22/7
V.kerucut=1/3×phi×r×r×t
=1/3×22/7×7×7×24
=22×7×8=1232cm kubik
V.stengah bola=2/3×phi×r×r×r
V.stengah bola=2/3×22/7×7×7×7
=2/3×1078=718,66cm kubik
V.total=V.kerucut+V.stengah bola
=1232+718,66=1950,66cm kubik


c) D=8cm r=1/2D=1/2×8=4cm
s=5cm t.tab=16cm phi=22/7

V.stengah bola=2/3×phi×r×r×r
=2/3×22/7×4×4×4
=134,09cm kubik

V.tab=phi×r×r×t
=22/7×4×4×16
=804,57cm kubik

[tex]s = \sqrt{ {r}^{2} + {t}^{2} } [/tex]
[tex]5 = \sqrt{ {4}^{2} + {t}^{2} } [/tex]
[tex] {t}^{2} = \sqrt{ {5}^{2} - {4}^{2} } = \sqrt{16} [/tex]
t=4cm

V.kerucut=1/3×phi×r×r×t
=1/3×22/7×4×4×4
=1/3×22/7×4×4×4
=67,04cm kubik

V.total=V.stengah bola+V.tabung+V.kerucut
=134,09+804,57+67,04
=1005,7cm kubik