Question

Tolong jawab soal yang dilingkari

Answer 1

26. 50cm = 120
750cm = ?

120.750:50 = 1800

Answer 2

26. 50/120 = 750/x
      1/120 = 15/x
       x = 120.15
       x = 1800 g

27. 3,2/x = 10/15
      3,2/x = 2/3
      x = 3,2.3/2
      x = 4,8g/cm^3

28. rho = m/v
      rho = 43,2/3^3 
      rho = 43,2/27
      rho = 1,6g/cm^3

30. rho = m/v
      5 = 90/1,5.2.x
      5 = 90/3.x
      5 = 30.x
      x = 30/5
      x = 6cm