The radii of two circles are in the ratio 2 : 3. What is the ratio of their circumference
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Step-by-step explanation:
•The ratio of the radii of the circles = 3:5
•Radius of first circle = 3x
•Radius of second circle = 5x
•Circumference = 2πr
==2π×3x=6πx
•circumference of second circle = r2πr
= 2π × 5x=10πx
•Ratio between their circumference
= 6πx:10πx
= 16:10
= 3:5
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