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L₁ : L₂ = 9 : 16
Ditanya: Perbandingan Keliling (K₁ : K₂)?
Dijawab:
L₁ : L₂ = (r₁)² : (r₂)²
9 : 16 = (r₁ : r₂)²
r₁ : r₂ = √(9 : 16)
r₁ : r₂ = 3 : 4
K₁ : K₂ = r₁ : r₂
K₁ : K₂ = 3 : 4