the radii of two circles are in the ratio 2:3.what is the ratio of their circumference
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Let the radii of circles be 2a and 3a
C1 = 2* pi *2a
= 4 pi *a
C2 = 2* pi *3a
= 6 pi*a
C1:C2 = 4 pi *a / 6pi *a
= 4/6
= 2/3
= 2:3
C1 = 2* pi *2a
= 4 pi *a
C2 = 2* pi *3a
= 6 pi*a
C1:C2 = 4 pi *a / 6pi *a
= 4/6
= 2/3
= 2:3
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