tolong jawab pertanyaan di gambar ya

tekanan 1 = tekanan 2
rho x g x h = rho x g x h
1000 x 10 x (6-3) = rho x 10 x 6m
10 000 x 3 = 60 rho
30 000 = 60 rho
rho = 30 000 : 60
      = 500 kg/m3