Respuesta :

starandjaiden

Answer:

4pi

Step-by-step explanation:

Ⓗⓘ ⓣⓗⓔⓡⓔ

Well, if the diameter is 4 u, the radius is 2 u.

The formula for finding the circumference of a circle is 2*pi*r

In this case, we'd just plug in 2 for r.

2*pi*2

4pi

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lydia0redman

Answer:

12.56

Step-by-step explanation:

To get circumference you need to multiply the diameter times PI which is 3.14

so 4 times 3.14 which is 12.56

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