See also the Dr. Math FAQ: See also the Browse High School
Trigonometry Stars indicate particularly interesting answers or
good places to begin browsing. Selected answers to common
questions: Volume of a tank. - Circle of Radius 1 km around
Given Latitude/Longitude [08/27/2002] I need feed points for a
circle of radius 1 km with center at a given latitude and
longitude. Eight or more points should be enough for the -
Circle on a Sphere Equation [05/05/2000] How can I find an
equation for all points that fall within a given radius from a
single latitude and longitude on the surface of a sphere? -
Circular Motion [01/27/2001] Two problems: An electric hoist is
being used to lift a piece of equipment... A car is moving at a
rate of 50 miles per hour and the diameter of its wheels is 2.5
feet... - Circumference at a Given Latitude [01/26/2001] How can
I calculate the circumference of a line around the earth (a
circle) at 40 degrees north latitude? - Circumference of a Globe
[1/27/1996] How do you derive a formula