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D = ~12.73 cm

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Q: What is the diameter if the circumference of a circle is 40cm?
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Related questions

How do you find the circumference of a circle if the diamter is 40cm?

circumference = pi*40cm


What is the circumference of a circle if the diameter is 40cm?

The circumference (C) of a circle is given by the formula C = 2πr But, the diameter equals twice the radius so we can write C = πd....where d is the diameter. So, C = 40π = 125.664 (3dp)


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