The number 3.14 is a rounded value of the mathematical quantity π. If you replace 3.14 with π, what is the exact formula for the circumference in terms of the diameter, d, and in terms of the radius, r?

Respuesta :

 the  radius = 3.14*2r= 6.28r.i got this answer from user

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Answer:

circumference = πd = 2πr

Step-by-step explanation: