i need the answer to #1 and how to do it i will mark brainliest!!

Answer:
Formula : C = 2[tex]\pi[/tex]r ( circumference = 2 × pi × radius )
Plug In Values : ( circumference = 2 × 3.14 × 6 )
2 × 3.14 × 6 = 37.68 inches
Explanation:
We know that 6 inches is the radius as indicated by the line. If the diameter is given ( the diameter goes all the way across the circle ) divide it by 2 to get the radius.
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