Answer:
C = 40.2124
Step-by-step explanation:
The formula for circumference is
C = 2*pi*r
where r is the radius.
Substitute what we know.
C = 2 * pi * 6.4
C = 12.8 * pi
If we use substitute pi in, we get
C = 40.2124
Step 1 understand the problem make sure that you read the questions carefully several times Step 2 devise a plan Translate step 3 carry out the plan solve this is a system of linear equations with 3 variables