subuah krucut jari jari alasnya 7dm tingginya 18dm maka volumenya

V.Kerucut = π × r² × t
= 22/7 × 7² × 18
= 22/7 × 49 × 18
= 22/7 × 882
= 2.772 dm³

Semoga Membantu :) Maaf kalo salah
``»•^°Mystic°^•«``

Volume = 1/3 x luas alas x t

Luas alas = phi r^2 = 22/7 x 7 x 7 = 154 dm^2

v = 1/3 x 154 x 18
v = 154 x 6
v = 924 dm^3