September 2018 1 53 Report
Luas permukaan tiga buah bola berturut-turut L1,L2 dan L3.
jika panjang jari jari bola masing masing adalh 2cm,4cm,dan 6cm,tanpa menghitung luas bola,tentukan:
a. L1:L2
b. L2:L3
c. L1:L2:L3

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