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f ok = 10 cm
Panjang teropong
d = f ob + f ok
d = 200 + 10 = 210 cm
Perbesaran teropong
M = f ob / f ok
M = 200 / 10 = 20 kali
fob=200cm
fok=10cm
dit
M....?
d...?
Jawab
M=Fob/Fok
M=200/10
M=20 kali
d=Fob+Fok
d=200+10
d=210cm