volume kerucut jika diameter 14 cm dan tinggi 20 cm

V = 1:3 x phi x r² x t = 1/3 x 22/7 x 7 x 7 x 20 = 1026, 66667cm³

V = 1/3 × π r 2 × t
= 1/3 × 22/7 × 7 × 7 × 20
= 1/3 × 3.080
= 1.026,66 cm3