4.158 cm³

Penjelasan dengan langkah-langkah:

Diketahui:

jari-jari tabung = 7 cm

tinggi tabung = 20 cm

tinggi benda = 41 cm

jari-jari kerucut = 7 cm

tinggi kerucut = 41 - 20 = 21 cm

Ditanya:

Volume gabungan?

Dijawab:

Volume tabung:

V = π × r² × t

V = 22/7 × 7 × 7 × 20

V = 22 × 1 × 7 × 20

V = 154 × 20

V = 3.080 cm³

Volume kerucut:

V = 1/3 × π × r² × t

V = 1/3 × 22/7 × 7 × 7 × 21

V = 1/3 × 22 × 1 × 7 × 21

V = 1/3 × 154 × 21

V = 21/3 × 154

V = 7 × 154

V = 1.078 cm³

Volume gabungan:

V = V tabung + V kerucut

V = 3.080 + 1.078

V = 4.158 cm³