#CIRCUMFERENCE OF A CIRCLE HOW TO#
How to find the circumference of a circle?Ĭalculate the circumference of a circle with the radiusįirst, multiply the radius by 2 to get the diameter. The circumference of a circle is the length of the curve that encloses that circle. It is like the perimeter of other shapes like squares. A circle's outside boundary is called the circumference. The circumference of a circle is the distance around the outside of the circle. The circumference of a circle is the length of the curve that encloses that circle.Ī disc (also spelled disk) is the region in a plane bounded by a circle.Ī disc with center O and radius r is the surface bounded by the circle with center O and radius r. The perimeter is defined as the circumference of the circle. The diameter is the distance from one point on a circle through the center to another point on the circle. The diameter is defined as twice the length of the radius of a circle. The radius of a circle is the length of the line from the center to any point on its edge. The perimeter of a circle is calculated using the formula 2 x Pi x Radius, or Pi x Diameter. It is noted "r".ĭiameter is a line segment, having boundary points of circles as the endpoints and passing through the center. Radius is the fixed distance between the center and the set of points.
When a set of all points that are at a fixed distance from a fixed point are joined then the geometrical figure obtained is called circle. Perimeter P of the circle = 2 x π x r ≈ 2 x 3.14 x 3 ≈ 18.84 cm²Ĭalculate the perimeter of a circle RadiusĪ circle is a closed shape formed by tracing a point that moves in a plane such that its distance from a given point is constant. With π (number pi) approximately equal to 3.14
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