Math, asked by iamsoumilibose, 2 months ago

The ratio of the radii of of two circles is 4:5.Find the ratio of their areas.
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Answered by mini2211

1

Step-by-step explanation:

let the radius be R1 and R2 and their ratio be x.

given,R1/R2=4x/5x

area of circle=πr²

πR1²/πR2²

R1²/R2²

4²/5²

16/25

ratio of areas=16:25

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