Jawabanmu

2014-06-15T18:46:59+07:00
D = f ob + 4 f p + f ok
 = 250 + 4.15 + 50
 = 250 + 60 + 50
 = 360 cm
Jawaban paling cerdas!
2014-06-15T18:49:15+07:00
D = fokus obyektif + 4 fokus pembalik + fokus okuler
   = 250 cm + ( 4 x 15 cm) + 50 cm
   = 250 cm + 60 cm + 50 cm
   = 360 cm

maaf kalau salah, coba dicek lagi
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