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The radius of a circle is 5 cm. What is the radius of another circle whose area is 25 times that of the first one?

The radius of a circle is 5 cm. What is the radius of another circle whose area is 25 times that of the first one?
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24 votes
The radius of a circle is 5 cm. What is the radius of another circle whose area is 25 times that of the first one?

User Selamawit
by
8.3k points

1 Answer

5 votes

Answer:

Explanation:

a₁ = πr₁⁵ = 25π cm²

a₂ = 25(25π) = 625π cm²

r₂ = 25 cm

User Zara Kolagar
by
8.5k points
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