The ratio of area of two circles is 4 : 25, find the ratio of thier perimeter
Answers
Answered by
3
Let the radius of two circles be r₁ and r₂
Then, according to question
πr₁² / πr₂² = 4/25
r₁ / r₂ = 2/5
Now,
Ratio of perimeter = 2 π r₁ / 2 π r₂
= r₁ / r₂
= 2 / 5
∴ Ratio of their perimeter is 2 : 5
Then, according to question
πr₁² / πr₂² = 4/25
r₁ / r₂ = 2/5
Now,
Ratio of perimeter = 2 π r₁ / 2 π r₂
= r₁ / r₂
= 2 / 5
∴ Ratio of their perimeter is 2 : 5
Answered by
0
Answer:
here is the answer for you dear.
Step-by-step explanation:
let the radius of two circles be r₁ and r₂
Then, according to question
πr₁² / πr₂² = 4/25
r₁ / r₂ = 2/5
Now,
Ratio of perimeter = 2 π r₁ / 2 π r₂
= r₁ / r₂
= 2 / 5
∴ Ratio of their perimeter is 2 : 5
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