Respuesta :

jtm2588

Answer:

The third answer.

Step-by-step explanation:

There are two formulas for circumference:

[tex]C = 2\pi r[/tex]

[tex]C = d\pi[/tex]

They give the diameter of 4, and they are going to use a combination of both formulas for the answer. They are using the second formula and then they are changing the diameter to a radius by dividing by 2.

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