volume tabung : 0.77 liter tinggi : 20 cm r : ...? jadi r brp cm?
Matematika
Berliyanacute6911
Pertanyaan
volume tabung : 0.77 liter tinggi : 20 cm r : ...? jadi r brp cm?
1 Jawaban
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1. Jawaban Merlia42
volume = 22/7 * r² * t
0,77 liter = 22/7 * r² * 20 cm
770 cm² = 22/7 * r² * 20 cm
770 ÷ 22/7 = 20r²
770 * 7/22 = 20r²
245 = 20r²
r² = 245 ÷ 20 = 12,25
r = √12,25 = 3,5 cm