Question

the ratio of the diameters of two circles is 3 is to 4 find the ratio of their circumference

Answer 1

Let the radius = x
so 3x:4x
their circumference ratio
2πr:2πr.
2π(3x) : 2π(4x)
3x : 4x [Both 2π canceled from both side]

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Answer 2

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