the area of two circle are in the ratio 16:49calculate the ratio of their circumference
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Step-by-step explanation:
A = π r² C = 2πr
A α r² C α r
A₁ : A₂ = 16 : 49
r₁² : r₂² = 16 : 49
r₁ : r₂ = 4 : 7
C₁ : C₂ = r₁ : r₂
= 4 : 7
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