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radius=1/2 circumference
Oops! Not true. The radius equals 1/2 the diameter of a circle, and the diameter equals the circumference divided by Pi (3.14...). But none of this answers the question, so:
Any segment of the circumference of a circle is called an "arc" and the size of the arc is usually expressed in degrees.
A 900 arc, for instance, would go 1/4 of the way around the circle, since a full circle is always 3600. Halfway round would be 900, 1/3 of the way 1200, and so on.
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What is an arc and a chord?
The arc is part of the circumference of the circle. A chord is a line that reaches from one part of the circle to another part.The diameter is an example.
What is the definition of an arc in math?
A part of a curved line. Often part of the circumference of a circle, but not necessarily. An arc can refer to other curved line segments.
Is the radius one fourth of the circumference?
No. It is circumference/(2*pi)No. It is circumference/(2*pi)No. It is circumference/(2*pi)No. It is circumference/(2*pi)
Why is half the diameter the radius?
A radius is a straight line from the circumference (boundary) of a circle to the centre. A diameter is a straight line that goes from the circumference to the centre and then continues until it reaches the circumference of the other side. In a circle, all points on the circumference are the same distance from the centre. As a result, the second part of the diameter is the same as the first. In other words, diameter = radius + radius = 2*radius.
What is the formula of a circumference?
circumference=r2pi
