Hitung kedalaman air......cm. ( phi= 3,14)
Tolong jawab pakai caranya ya
Tolong jawab pakai caranya ya
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11.775 cm³ = ¹/₃π.r²t₁ + πr²t₂
11.775 = πr² ( ¹/₃t₁ + t₂ )
11.775 = 3, 14 × 15² (¹/₃ × 20 + t₂ )
²⁰/₃ + t₂ = 11.775 : (3,14×15²)
6, 7 + t₂ = 16, 7
t₂ = 16,7 - 6,7
t₂ = 10 cm
Jadi, kedalaman air adalah 10 cm. Tidak ada dalam pilihan.