Jawaban:

1. Dik : Diameternya (d) = 28 cm

Maka Jari jari (r) = 28/2 = 14 cm

Tinggi (t) = 60 cm

Dit : Volume tabung

Jwb: Volume = π x r x r x t

Volume = 22/7 × 14 × 14 × 60

Volume = 22/7× 11.760

Volume = 36.960 cm³

2. Dik : Tinggi prisma (t) = 40 cm

Alas (a) = 18 cm

Tinggi Alas (t∆) = 20 cm

Dit : volume prisma segitiga

Jwb: V = L Alas × Tinggi

V = ( ½ x a x t∆ ) x tinggi prisma

V = ( ½ × 18 × 20) × 40 cm

V = 180 × 40

V = 7.200 cm³

3.Dik : Tinggi (t) = 60 cm

Diameter (d) alas = 56 cm

maka jari jari (r) = 56/2 = 28 cm

Dit : Volume tabung

Jwb : V = π x r x r x t

V = 22/7 × 28 × 28 × 60

V = 22/7 × 47.040

V = 147.840 cm³