MATH CALCULATOR
Circle Equation Calculator
Calculate the area and circumference of a circle using our online tool.
What is the Circle Equation Calculator & How does it work?
A circle is a geometric shape consisting of all points in a plane that are at a fixed distance from a central point. This distance is known as the radius (r). The equation of a circle with center (h, k) and radius r is given by:The area (A) and circumference (C) of a circle can be calculated using the following formulas:The circumference is the distance around the circle:
(x – h)^2 + (y – k)^2 = r^2
(x, y) = any point on the circle
(h, k) = center of the circle
r = radius of the circle
(h, k) = center of the circle
r = radius of the circle
A = pi r^2
A = Area
r = Radius
pi (pi) β 3.14159
r = Radius
pi (pi) β 3.14159
C = 2 pi r
C = Circumference
r = Radius
pi (pi) β 3.14159
r = Radius
pi (pi) β 3.14159
Parameters
Resultβ
Frequently Asked Questions
How do I find the equation of a circle?
Use the formula (x - h)^2 + (y - k)^2 = r^2, where (h, k) is the center and r is the radius.
What is the area of a circle?
The area A of a circle is calculated using A = Οr^2, where r is the radius.
How do I calculate the circumference of a circle?
The circumference C is given by C = 2Οr, where r is the radius.
What does (h, k) represent in the circle equation?
(h, k) represents the coordinates of the center of the circle.
Can I use this calculator for any shape besides a circle?
No, this calculator is specifically for circles. For other shapes, you would need different formulas.
Results are for informational purposes only and do not constitute professional advice.