Question

Dik perbandingan panjang, lebar, dan tinggi sebuah balok 6 : 4 : 5. Jika volume balok 7.680 cm^3, maka lebar balok adalah?

Answer 1

p : l : t = 6 : 4 : 5
misal : p = 6x   ; l = 4x  dan  t =  5x
     V = p . l . t
7680 =  6x . 4x . 5x
7680 = 120x³
    x³ = 
    x³ = 64
     x = ∛64
     x = 4
l = 4x
  = 4 . 4
  = 16 cm

Answer 2

Volume = p x l x t
7680 = 6a x 4a x 5a
7680 = 120a³
a³ = 64
a = 4
Maka;
Lebar = 4a = 4(4) = 16 cm