Part of the circumference of a circle is an arc.
The height of a piece of paper folded in half once is half of its original height.
Circumference = 2*pi*radius or diameter*pi
a golf ball
condom
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If the length of the round edge of a piece of pie is identical to the length of the two straight sides of the piece of pie, the angle between the two straight sides is 1 radian.An angle of 1 radian results in an arc with a length equal to the radius of a circle. A radian is equal to an angle of approximately 57.295 degrees at the center of a circle between two radii separated at the circumference by an arc equal in length to the radius.
A cup is usually a roughly cylindrical hollow container. The circumference of a cup would be the length of a piece of string wrapped around the cylinder.
Circumference is the measurement around the trunk of the tree. It is usually measured at breast height because trees flare out at the bottom at different rates based on soil conditions. The best way to measure this is with a ribbon or piece of rope. Diameter can be measured by dividing this number by pi or 3.1415
Ice hockeypuck
The circumference is the length of the outside of the circle. For example, if you took a piece of string and made a circle with it, then laid the string straight, the length of the string would be the circumference. The circumference of a circle can be measured by doing two times the radius of the circle times the mathematical constant, pi.
It is a volleyball net, specifically one used by men.