Find the circumference of the circle pictured. Use C = 3.14(2)(r).

Question

anonymous · Answer

attachment

mathstudent55 · Answer

The circumference of a circle is
C = 2(pi)r
In this case, r = 2x + 1, so
C = 2(3.14)(2x + 1) = (6.28)(2x + 1) = 12.56x + 6.28

anonymous · Answer

the answer possibilies are A = 12.56n2 - 37.68n + 28.26 
   A = 12.56n2 + 28.26 
   A = 6.28n2 - 9.24

mathstudent55 · Answer

How can all your answer choices have n in them when your picture has 2x + 1. Did you copy the wrong picture or the wrong answer choices?

anonymous · Answer

no i didnt they are right

mathstudent55 · Answer

Besides, your answer choices have A for area. Your problem asks for circumference.

anonymous · Answer

my bad im sorry here they are    6.28x + 3.14 
   3.14x + 6.28 
   12.56x + 6.28

mathstudent55 · Answer

Didn't I come up with one of those?

anonymous · Answer

yeah thanks!

mathstudent55 · Answer

yw