fob=74,5 cm
Penjelasan:
panjang tubus
L=fob + fok
7 6=74,5 + fok
fok=1,5 cm
m=fob / fok
m=74,5 / 1,5
m=492/3 kali
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fob=74,5 cm
Penjelasan:
panjang tubus
L=fob + fok
7 6=74,5 + fok
fok=1,5 cm
m=fob / fok
m=74,5 / 1,5
m=492/3 kali