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Which of the following is not equivalent to the formula for the circumference of a circle, C = 2pir ?

A) C over r equals 2 times pi

B) C over pi equals 2 times r

C) C over the quantity of r times pi equals 2

D) Cr = 2pi

Respuesta :

The correct answer is Cr = 2Pi
D) Cr = 2pi
This is because you cannot just move the r over to the other side of the question, you have to divide it out, and whatever you do to one side, you must do to the other.

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