First, find the relationship of the circumference to its diameter by finding that the length of the diameter wraps around the length of the circumference approximately π times. Use this relationship to writing an equation showing the ratio of circumference to diameter equaling π. Then rearrange the equation to solve for the circumference. Substitute the diameter for 2 times the radius
Use these equations when converting polar equations to parametric equations:


We know that
, so substitute that into both equations for x and y.


Now, replace
with any variable that you want to represent the parametric equations in. I'll use the standard variable, 


Thus,
represented in parametric form is:

Let me know if you need any clarifications, thanks!
~ Padoru
Half of the distance from one side, through the middle, to the other side.
circumference: 3.14*radius*2
Answer:
(C)y=0
Step-by-step explanation:
An exponential function of the form
always has a horizontal asymptote at y = c.
Given our function 
Comparing with the form,
, we observe that c=0.
Therefore, the exponential function has an <u>asymptote at y=0.</u>
The correct option is C.