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p = 2m = 200cm
s'= - p = -200cm
mata normal berarti s = 25 cm
dit
P km
jawab
P km= 100/s' - 100/s
P km= 100/25 - 100/200
P km= 4 - 1/2
P km = + 3,5 dioptri
semoga membantu sob.....