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Volume = 88 liter = 88.000 cm³
Tinggi = 70 cm
π = 22/7
Jawab
88.000 = π x r² x t
88.000 = 22/7 x r² x 70
88.000 = 22/7 x 70 x r²
88.000 = 220 x r²
88.000 : 220 = r²
400 = r²
√400 = r
20 = r
Jadi, jari jari alas tangki tersebut adalah 20 cm.