How to calculate the area of a circle? Calculation is easy once you have measured the circle's radius or diameter, or if you know it from plans and schematics: just plug the numbers into the formulas above or use our circle area calculator instead. If you are measuring it by hand, reme...
About Area of a Circle Calculator The Area of a Circle Calculator is used to help you find the area of a circle. Area of Circle Formula The following is the calculation formula for the area of a circle: A = πr2 Where:A = area of a circleπ = 3.141592654r = radius of the ...
Find the area with this circle area formula: Multiply Pi (3.1416) with the square of the radius (r).Area = 3.1416 x r squared The radius can be any measurement of length. This calculates the area as square units of the length used in the radius.Example: The area of a circle with a...
Calculate the area of a circle using the radius, diameter, or circumference with the circle area calculator. Radius: Diameter: Circumference: Area: Reset Add this calculator to your site On this page: Calculator How to Calculate the Area of a Circle Circle Area Formulas Find ...
See How to Calculate the Area below, but first the calculator:The CalculatorEnter the radius, diameter, circumference or area of a Circle to find the other three. The calculations are done "live":How to Calculate the AreaThe area of a circle is:...
The area of a circle calculator helps you compute the surface of a circle given a diameter or radius. Our tool works both ways— no matter if you're looking for an area-to-radius calculator or a radius to the area one, you've found the right place ◔ We'll give you a tour of ...
Area Calculator Area of quadrilateral Area of a circle and fan shape ･Area of a circleCalculate the area of the circle and the perimeter from the radius. ･Area of fan shapeCalculate the area of the sector, the length of the arc, and the length of the chord from the radius and ...
Circle Area = π× r2 r = radius Ellipse Area = πab Sector Area = ½ × r2×θ r = radiusθ = angle in radians Note: h is at right angles to b Example: What is the area of this rectangle? The formula is: Area = w × h w = width h = height We know w = 5 an...
If you know the circle’s diameter, you canfind the radiusby dividing the diameter in half. A = π(d/2)2 d = diameter How to Find Area of an Ellipse An ellipse, or oval, is a shape where the sum of the distances from two fixed points, called the foci, is constant. An ellipse...
Circle formula calculator; Radius of a circle calculator; Circle length calculator; Circumference to diameter; Diameter of a circle calculator; Circle perimeter calculator; Square footage of a circle calculator; and Square inches of a circle calculator. FAQs How are the circumference and area of a ...