Find the area of a circle using the equation A=?r^2. The area is equal to the radius, which is the distance from the center of the circle to its edge, times itself, times pi (approximately 3.1415). More »

The equation for the area of a circle is pi times the square of the radius or A = ??????r2. Calculating the area of a sector involves figuring out what fraction of the circle's area the sector covers. More »

To calculate the area of a circle, square the radius and multiply by pi (approximately 3.14). This enables you to find the area of any circle. More »

To calculate the area of a circle, square the radius and multiply by pi (approximately 3.14). This enables you to find the area of any circle. More »

The area of a circle is determined by the formula: A = π r2. You can easily calculate the area of a circle in under a minute. All you need is a calculator, a circle to measure and a tool with which to measure, such as a ... More »

The equation for the area of a circle is pi times the square of the radius or A = πr2. Calculating the area of a sector involves figuring out what fraction of the circle's area the sector covers. More »

The area of any simple shape, such as a circle, triangle or rectangle, can be found by taking a series of measurements from the shape and plugging them into a formula. The necessary formula varies according to the shape ... More »