Question

Hi
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Please tell me answer of this question in easy way but Step-by-step explanation

ratio of radius of two circles is 5 : 4 then what is the ratio of their area

Answer 1

$heya$
Let the radii of the two circles be r1 and r2.
Area of a circle=πr²
So, πr1²=πr2²
π(5)²=π(4)²
Cancelling π from both sides,

We get 25:16.
Hence, the ratio of their areas is 25:16.
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