Volume tabung 3.080 cm3. Jika jari jari tabung 7 cm maka luas permukaan tabung adalah.....cm2

Volume = πr²t
3.080 = 22/7 × 7² × t
3.080 = 22/7 × 49t
3.080 = 22 × 7t
3.080 = 154t
20 = t
t = 20 cm

Luas Permukaan = 2πr(r + t)
= 2 × 22/7 × 7 (7 + 20)
= 2 × 22 (27)
= 44 (27)
= 1.188 cm²