Perbandingan rusuk balok adalah 2 : 3 : 5 volume balok 1.920cm.berapa seluruh luas permukaan balok?tolong

V = p x l x t
1.920 = (2x) (3x) (5x)
1.920 = 30x
x = 1920/30
x = 64 cm

p = 2x = 2(30) = 60
l = 3x = 3(30) = 90
t = 5x = 5(30) = 150

LP = 2 (p.l + l.t + p.t)
     = 2 ((60.90) + (90.150) + (60.150))
     = 2 (5400 + 13500 + 9000)
     = 2 (27900)
     = 55.800 cm²

Semoga membantu….^^