diketahui : Pok = 20 D; d = 55 cm
ditanya : Pob
dijawab : Pok = 20 D fok = 100/Pok = 100/20 = 5 cm
d = fok + fob
55 = 5 + fob
fob = 50 cm
Pob = 100/50 = 2 D
jadi jawabannya D.
semoga membantu dan jangan lupa klik bintang 5 ya ...
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diketahui : Pok = 20 D; d = 55 cm
ditanya : Pob
dijawab : Pok = 20 D fok = 100/Pok = 100/20 = 5 cm
d = fok + fob
55 = 5 + fob
fob = 50 cm
Pob = 100/50 = 2 D
jadi jawabannya D.
semoga membantu dan jangan lupa klik bintang 5 ya ...