area of two circle are in the ratio 16:49....... calculate the ratio of their circumferences
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area of two circle are in the ratio 16:49....... calculate the ratio of their circumferences
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Answer:
4 : 7
Explanation:
[tex]\pi r^{2} \div \pi \: r {}^{2} = 16 \div 49 \\ {r}^{2} \div {r}^{2} = 16 \div 49 \\ r \div r = 4 \div 7[/tex]
hope it helps..
Verified answer
Answer:
brainliest!!!!
Explanation:
A = π r² C = 2πr
A α r² C α r
A₁ : A₂ = 16 : 49
r₁² : r₂² = 16 : 4
r₁ : r₂ = 4 : 7
C₁ : C₂ = r₁ : r₂
= 4 : 7