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Jawaban:
diketahui :
s = 100 cm
f = 20 cm
ditanya :
s'
dijawab :
1/f = 1/s + 1/s'
1/20 = 1/100 + 1/s'
1/s' = 1/20 - 1/100
= 5/100 - 1/100
1/s' = 4/100 = 1/25
s' = 25 cm
Jawaban:
Diketahui:
s = 100 cm
f = 20 cm
Ditanya: s'=....
Penyelesaian:
s'= s×f/s-f=100×20/100-20=2000/80= 25 cm
maaf klo salah..