Perhatikan gambar disamping!Jika r=10cm dan t=21cm,hitunglah volume kerucut di samping!

diket r=10cm,t=21cm
V kerucut=1/3×Π×r kuadrad×t
=1/3×3,14×10×10×21
=3,14×100×7
=314×7
=2198cm kubik