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If a circle has the area A and radius r, thenA = pi * r^2
An angle in a circle who's vertex is on the circle.
The circumference of any circle divided by its diameter is equal to pi
That is the definition of the incenter; it is the center of the inscribed circle.
a four side figure with equal measure of all sides
it is the circle that ut the hemisphere into two part.
it is the circle that ut the hemisphere into two part.
mathematical phrase
Altitude
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A semi-circle.
A circle. (or approximately a circle if you look closely the mountains and valleys that the cross section cuts through disturb the circle). a mathematical sphere will give a mathematical circle at all cross sections.
force/area
DDSDS
"Pi" is a number. It's the circumference of any circle divided by the diameter of the same circle. It's approximately equal to 3.1416, or to ( 22/7 ), but it can never be written exactly with digits. That's why a symbol is used to refer to it.
A quarter of a circle.
Property is not just a mathematical term. It means a characteristic or attribute.