circumference = 18.84cm - diameter = 6cm, circumference = 31.4cm - diameter = 10cm, circumference = 15.7cm - diameter = 5cm, circumference = 25.12cm - radius = 4cm, circumference = 21.98 cm - radius = 3.5cm, circumference = 6.28cm - diameter = 2cm, circumference = 87.92cm - radius = 14cm,

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