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24-02-2021
Mathematics

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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?

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24-02-2021

Answer:

Step-by-step explanation:

a₁ = πr₁⁵ = 25π cm²

a₂ = 25(25π) = 625π cm²

r₂ = 25 cm

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