Q:

How do you calculate the square footage of a circle?

A:

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 ruler.

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1. Determine the radius of the circle

Use a ruler or similar tool to measure the radius of the circle. This is the length of the line from the middle of the circle to any point on its edge.

2. Convert the radius to feet

If the radius of the circle was measured in inches, multiply the number by 0.0833333 using the calculator. If it was measured in centimeters, multiply the number by 0.0328084.

3. Use the formula to calculate the area

Multiply the radius (in feet) by itself. Then multiply this number by pi (approximately 3.141592). There should be a pi (π) button on your calculator to make this easier. This number is the area of the circle in square feet.

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Related Questions

• A:

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.

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• A:

To calculate square meters in a given space, you can measure the number of meters on each side and multiply them. Alternatively, if you know the number of square feet, you can convert that figure into square meters. You may want to use a calculator to do the math involved.

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• A:

Area is the space covered by a two-dimensional shape. The two dimensions are often expressed in terms of length and height or length and width. Multiplying length by height gives the area of rectangular objects. If these objects are measured in feet, the area is in square feet.