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ubah ke cm semua biar enak ngerjainnya
t drum = 15 dm = 150 cm
r drum = 2 m = 200 cm
= L.alas drum x Tinggi drum / L alas botol X t botol
= π r² t / π r² t
= (22/7 x 100 x 100 x 150 ) / ( 22/7 x 14 x 14 x 30)
= 33.000.000/ 129.360
= 255,1 atau sekitar 256 botol
diubah ke cm
t drum = 15 dm = 150 cm
r drum = 2 m = 200 cm
= L.alas drum x Tinggi drum / L alas botol X t botol
= π r² t / π r² t
= (22/7 x 100 x 100 x 150 ) / ( 22/7 x 14 x 14 x 30)
= 33.000.000/ 129.360
= 256 botol