Jawabanmu

2014-03-29T22:05:22+07:00
Diket:
 (1= air, 2= balok)
h2= 20 cm
rho 2 = 0,90 g/cm3
rho 1 = 1,20 g/cm3
dit= h1 ...?

jwb =
h1 = rho 2 . h2 / rho 1
= 0,90 . 20 / 1,20 = 180/ 1,20 = 150 g/cm3

mungkin gtu kali jwbnnya, mav klo salah ya..