August 2018 1 80 Report
Sebuah tabung berisi air,ketinggian air 20 cm.Tiga bola logam yg sama,masing-masing brjari-jari 8 cm,dimasukkan ke dlm tabung sehingga permukaan air menjadi naik.Jika jari-jari tabung 32 cm,maka tinggi air pd tabung sekarang menjadi........cm
A.21
B.22
C.23
D.24
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