sebuah tabung jari jari nya 8 cm luas seli 240 phi cm kuadrat hitung lh volume tabung

Cylinder.

Hello, this is phi (φ) and this is pi (π).
L = 2πrt
t = L / (2πr)
   = 240π cm² / [2π(8 cm)] = 15 cm

V = πr²t
    = π(8 cm)²(15 cm)
    = 960π cm³