Question

The ratio of thediameters of two circles is 3:4.find the ratio of their circumferences.

Answer 1

Let the diameters be 3x and 4x

Circumference of 1circle =2πr = 2π × 3x

Circumference of 2circle=2π4x=2π × 4x

Ratio =(2π × 3x)/(2π × 4x)

Ratio = 3 : 4

therefore the ratio of their circumferences is 3 : 4.

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