How do I find the circumference of a circle with a 8cm radius?

Question

anonymous · Answer

The radius is HALF the diameter. 

Thus, it follows that you should just multiply the radius length by two to find diameter. In this case, the diameter is 16cm and you said you know how to find the circumference so I won't explain that.

anonymous · Answer

Isn't radius half of acircle and the circumfrence is the whole length. so 8+8=16cm

***[isuru]*** · Answer

nope.... the circumference is  
                 $$C = 2 \ \pi \ r $$

***[isuru]*** · Answer

where 
  r is the radius
  pi is a constant which is 22/7 or 3.14 approximately...

anonymous · Answer

Can you break that down @***[ISURU]*** ? I don't understand.