Subject: What is the relationship between amplitude and wavelength?

I was reading about waves and i found that we can describe wave properties by 
using a unit circle.Now when partical completes its one revolution on that 
circle we say that the time it has taken is time period T,the distance it 
covers is its wavelength for example if radius of circle is one unit then 
wavelength = 2*pai*1.Now i want to ask somthing about amplitude,is the 
amplitude equals to the radius of the circle? If it is correct then i conclude 
that waves having same amplitude must having same wavelength i.e when we change 
amplitude we actually change the radius of the circle which in turn change the 
wavelength as wavelength=2*pai*radius.If i am wrong please clear my doubt about 
wavelength and amplitude. 
thanks  

Re: What is the relationship between amplitude and wavelength?