SOLUTION: what is the relationship between the diameter and the circumference of the circle

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Question 818237: what is the relationship between the diameter and the circumference of the circle

Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

The distance across the circle is the diameter (d). 

The radius (r) is the distance from the center to a point on the circle. 

d = 2r

c =pi%2Ad+  0r C = 2pi%2Ar

For ex:  d = 6in.   C = 6piin  

0r using an approximation for pi+=+3.14  C= 6%283.14%29+=+18.84in