Use the number 145,973 write the name of the period that has the digits 145
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Hello,
The formula for finding the circumference of a circle is
where r is the radius. SO we can plug 4 in for r in this formula because 4 is the radius:
. We are told to use 3.14 for 
so we get 
. Therefore, the circumference is 25.12 meters.
The formula for finding the circumference of a circle is
