Tolong jawab no.37,38,39 Ya:)

37. 2/1 - 3/4 - 3/5
= 40/20 - 15/20 - 12/20
= 13/20
= 0,65 ha

38. L = 14/3 dm
      p = 10/3 dm

l = 14/3 : 10/3
  = 1,4 dm = 14/10
  = 1 2/5 dm

39. Perbandingan = 12 : 40
                              = 3 : 10