Tentukanlah volume dan luas permukaan tabung berikut r21cm t18cm​

Volume:

V = πr²t

V = 22/7 × 21² × 18

V = 22/7 × 441 × 18

V = 22 × 441 × 18/7

V = 174.636/7

V = 24.948 cm³

Luas Permukaan:

Lp = 2πr(r+t)

Lp = 2 × 22/7 × 21 × (21 + 18)

Lp = 2 × 22/7 × 21 × 39

Lp = 2 × 22 × 21 × 39/7

Lp = 36.036/7

Lp = 5.148 cm²