September 2018 1 102 Report
Terdapat dua bola, perbandingan jari-jari bola I dan II = 2:3. Jika luas kulit bola I adalah 400πcm² maka luas kulit bola II adalah....

a. 480 πcm²
b. 600 πcm²
c. 720 πcm²
d. 900 πcm²
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