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t = 50 cm
V tabung
= phi x r² x t
= 22/7 x 14 x 14 x 50
= 22 x 2 x 14 x 50
= 30.800 cm^3
= 30.800 mL
maka,
yg diperlukan
= 30.800 mL : 220 mL
= 140 botol