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

Enter the radius, diameter, circumference or area of a Circle to find the other three. The calculations are done "live": The area of a circle is: Example: What is the area of a circle with radius of 3 m ? How to Remember? It is interesting to compare the area of a circle to a square: A circle has about 80% of the area of a similar-width square.

May 8, 2024 · You can find the area of a circle by using the area of a circle formula: A=πr² (where r is the length of the radius of the circle). Whenever you are calculating a circle’s area using the area of a circle formula, you can use pi (π) or an approximation of pi (π≈3.14).

Here you will learn about calculating the area of a circle, including how to calculate the area of a circle given the radius, how to calculate the area of a circle given the diameter and how to calculate the area of a circle given the circumference.

Oct 25, 2023 · The area of a circle can be calculated using three different formulas. The formulas are used based on whether the radius, diameter, or circumference is known to us. Each of the three situations is discussed below with their formulas and solved examples.

The formula to find a circle's area $$ \pi $$ 2 usually expressed as $$ \pi \cdot r^2 $$ where r is the radius of a circle.

Jan 16, 2023 · Learn how to find the area of a circle using the formula for radius, diameter, and circumference. Easily calculate the area with these step-by-step examples.

In this tutorial, we’ll focus on how to find the area of a circle. We’ll look at the important formulas, and learn how to use them to solve problems. So let’s get started. First, a quick recap of a few important concepts and terms.

Using A = πr2, The formula for the area of a circle can be proven in a number of ways. One such way involves breaking the circle into equal sectors and rearranging them to construct a parallelogram. In the figure above, the circle with radius r is broken into 16 sectors of equal area.