Answer:
the factors of x^3-1 are 
Step-by-step explanation:
We need to find factors of x^3 -1

So, the factors of x^3-1 are 
Yes it does because it is even in each side
The equation for the circumference is 2*pi*radius
if you are given the circumference then divide both sides by pi
that is because the diameter is 2 times the radius
so you can rearrange the equation to
C = pi * 2 * r
C = pi * d
divide both sides by pi
C/pi = d
Hope this helps :)