volume balok ... dm^3 tolong ya besok di kumpulkan

p = x +2
l = x -1
t = x

Lp = 2(PL + PT + lt)
108/2 = ((x+2)(x-1) + (x+2)x + (x-1)x)
54 = ( x² + x -2 + x² + 2x + x² - x)
54 = 3x²+2x-2
3x² + 2x -56 = 0
(3x + 14)(x-4 ) = 0
x = 4
p = 6 cm
l = 3 cm
t = 4 cm

Volume = 6 x 3 x 4 = 72 cm³