![]() The circumference (C) of a circle with radius R is given by the equation Remember that the area (A) of a circle with radius R is given by the equation The area of a circle can be the same as the circumference when R = 0 or R = 2. However, the units will be different (area is in square units, while circumference is in linear units). The area of a circle can have the same value as the circumference in two special cases. Can The Area Of A Circle Be The Same As The Circumference? ![]() Let’s start off with a common question regarding area and circumference of a circle. We can use formulas for the area and circumference of a circle to relate these two concepts and also to relate them to radius and diameter of the circle. ![]() Questions About Circles (Area, Circumference, Diameter, & Radius) In this article, we’ll answer 8 common questions about circumference, area, radius, and diameter of a circle. Of course, we can also find specific R values (or ranges of values) to tell us when the circumference, area, and diameter satisfy certain relationships. The circumference also tells us how the area of a circle changes as the radius increases or decreases. The value of the area is equal to half the circumference multiplied by the radius of the circle. So, how are the circumference and area of a circle related? The circumference of a circle has linear units, while area of a circle has square units. The area of a circle is determined with the help of the radius of the circle.Area and circumference of a circle both involve the constant π and the radius of the circle, but their units vary. The circumference of a circle is derived by the formula: C=2πr The circumference is the distance covered to complete one circle also known as the perimeter of circle. Tangent: A coplanar straight line intersecting the exterior of the circle at a single point.Ĭlick here for SSC CGL Tier 2 Free Quizzes of all Topics Circumference of Circle The half-disc of the circle is Semicircle. Semicircle: It is the arc determined by the endpoints of a diameter, taking its midpoint as the centre. Segment: The region bounded by a chord and one of the arcs connecting the chord’s endpoints. Sector: A region bounded by two radii of equal length with a common centre. Radius: A line segment joining the centre of a circle to any point on the circle. ![]() It is the longest chord for a circle and is twice as long as the radius. Determining two endpoints on the arc and centre allows two arcs to form a complete circle together.Ĭentre: The point that is equidistant from all points on the circle.Ĭhord: A linear segment dividing the circle into two segments whose endpoints lie on the circle.ĭiameter: The greatest distance between two points in a circle is the diameter. Download the PDF for notes on Circle with examples.Ĭlick here for SSC CGL Tier 2 Study material Circle TerminologyĪrc: Every connected point on the circle is the arc. We are providing you with the important terminologies, formula and examples based on Circles. Questions based on circles are widely asked in various competitive examinations where candidates need to apply the formula and derive the answer. An exact round shape is the perfect example of a circle. Simply, a circle is a closed curve that divides a plane into 2 regions- interior and exterior. What is a Circle? A Circle is a 2-dimensional round shape consisting of points at equidistant from the centre. Circle: Definition, Circumference, Area, And Examples Download PDF
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