Jawabanmu

2014-05-21T16:09:07+07:00
AB =panjang balok, BC= lebar balok, AC = lebar balok

AC^2 = AB^2 + BC^2
(x+2)^2 = (x+1)^2 + x^2
x^2 + 4x + 4 = x^2 + 2x +2 + x^2
x^2 + 4x + 4 = 2x^2 + 2x +2
x^2 - 2x^2 + 4x - 2x + 4 -2 = 0
-x^2 + 2x + 2 = 0
x^2 - 2x - 2 = 0
(x - 3 (x + 1) =0
x = 3 atau x = -1
Maka yg memungkinkan x = 3

Panjang balok (AB) = (x+1) = (3+1) = 4 cm
Lebar balok (AC) = x = 3 = 3 cm
Tinggi balok = 2 cm

Jadi, volume balok = p*l*t = 4*3*2 = 24 cm^3