Your planet has a circumference of 44032 miles at the .918 latitude North. If it takes 2.5 earth days (24 hour days) for your planet to complete one rotation then determine the following:

I got the radius its 7007.910 miles. Now its asking for the circumference of the equator. How do I find the circumference of the equator? Oh yes this is my first trig. class so I'm not advanced or anything. Thanks!