Question

circumference of 2 circles are in the ratio 4:5 find the ratio o f their areas

Answer 1

16:25 as circumference ratio will give radius ratio as 4:5 .,,which on squaring will give 16:25

Answer 2

Hey there,

Area ratio=πr₁²/πr₂²
Cancelling π be get 4²/5²=16/25

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