Lp = 596,6 cm²
(b) Luas permukaan tabung
Lp = 2πr(r + t)
Lp = 2 × 3,14 × 12 dm × (12 dm + 40 dm)
Lp = 75,36 dm × (52 dm)
Lp = 3.918,72 dm²
(c) Luas permukaan tabung
Lp = 2πr(r + t)
Lp = 2 × 3,14 × 1 m × (1 m + 2 m)
Lp = 6,28 m × (3 m)
Lp = 596,6 cm²
(b) Luas permukaan tabung
Lp = 2πr(r + t)
Lp = 2 × 3,14 × 12 dm × (12 dm + 40 dm)
Lp = 75,36 dm × (52 dm)
Lp = 3.918,72 dm²
(c) Luas permukaan tabung
Lp = 2πr(r + t)
Lp = 2 × 3,14 × 1 m × (1 m + 2 m)
Lp = 6,28 m × (3 m)
Editor: Moch. Kharisson Abdillah
Sumber: Buku Kemdikbud