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2. phi. r=2. phi. r ⇒⇒⇒⇒phi-nya sama-sama dicoret
2.14 = 2.21
28 = 42
K1/K2=28/42
=2/3
2. phi. r=2. phi. r ⇒⇒⇒⇒⇒phi
2.14 = 2.21
28 = 42