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Browse High School Conic Sections, Circles
Stars indicate particularly interesting answers or
good places to begin browsing.
Selected answers to common questions:
About ellipses.
Find the center of a circle.
Is a circle a polygon?
Volume of a tank.
Why is a circle 360 degrees?
 Why is Pi a Constant? [08/01/2000]

Why is the circumference of a circle divided by the diameter, or pi, the
same number for every circle?
 Why Pi? [07/19/2002]

Instead of using pi, why don't we measure the radius and circumference
of a given circle, and use that ratio to find the area? Wouldn't that
be more accurate?
 Woodworking Curve [02/06/2002]

I am making a cabinet and I want to put a curve on the front of the
shelves. The "chord" of the circle would be 15" and a perpendicular line
from the center point of the chord to the circumference of the circle is
1".
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