SOLUTION: Two circles have the same center. The radius of the larger circle is 3 units longer than the radius of the smaller circle. Find the difference in the circumfrences of the two circl

Algebra ->  Circles -> SOLUTION: Two circles have the same center. The radius of the larger circle is 3 units longer than the radius of the smaller circle. Find the difference in the circumfrences of the two circl      Log On


   



Question 188028: Two circles have the same center. The radius of the larger circle is 3 units longer than the radius of the smaller circle. Find the difference in the circumfrences of the two circles. Round to the nerest hundredth.
Answer by Alan3354(69443) About Me  (Show Source):
You can put this solution on YOUR website!
Two circles have the same center. The radius of the larger circle is 3 units longer than the radius of the smaller circle. Find the difference in the circumfrences of the two circles. Round to the nerest hundredth.
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C = 2*pi*r
C2 = 2*pi*(r+3) = 2*pi*r + 6*pi
diff = 6pi = ~18.85 units
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Having the same center is not relevant.