The area of a circle can be calculated using the formula A = πr², where A represents the area, π (pi) is a constant approximately equal to 3.14159, and r is the radius of the circle.
To find the area, simply follow these steps:
- Measure the radius of the circle. This is the distance from the center of the circle to any point on its perimeter.
- Square the radius (multiply it by itself). For example, if the radius is 3 units, then you would calculate 3 × 3 = 9.
- Multiply the squared radius by π. Using our example, you would calculate 9 × 3.14159, which equals approximately 28.27.
So, in this case, the area of a circle with a radius of 3 units would be about 28.27 square units.
This formula works for any circle, regardless of its size, making it a straightforward way to find the area when you know the radius.