panjang diameter alas tabung 14 cm dan tinggi 10. jika phi 22/7 maka luas dan volume tabung adalah

L =1/4πd².
= 1/4. 22/7.14.14
= 154cm²

Vtabung = πr²t
= 22/7. 7².10
= 1540cm ³

d = 14 => r = 7
Luas = 2πr(r + t) = 2 . 22/7 . 7 (7 + 10) = 44(17) = 748 cm^2

Volume = πr^2.t = 22/7 . 7 . 7 . 10 = 1.540 cm^3