Q:

How do you calculate the square footage of a circle?

A:

Quick Answer

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.

Know More
How do you calculate the square footage of a circle?
Credit: Chris McClanahan CC-BY-SA 2.0

Full Answer

  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.

Learn more about Geometry

Related Questions

  • Q:

    How do you calculate the square footage of floor space?

    A:

    To calculate square footage of rectangular floor space, determine the length and width of the rectangular space in feet, then multiply them together. If floor space is not a perfect rectangle, break the space up into rectangles, calculate the area of each rectangle, and find the sum of the combined areas.

    Full Answer >
    Filed Under:
  • Q:

    How do you figure area?

    A:

    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 but works for all shapes of that type.

    Full Answer >
    Filed Under:
  • Q:

    What formula is used to find the diameter of a circle?

    A:

    The diameter of a circle can be calculated using the formula d = 2r, where "d" indicates the diameter and "r" denotes the radius of the circle. In terms of circumference, the diameter can be computed using the equation d = c/pi, where "c" represents the circumference and pi is approximately equivalent to 3.142. If the area of the circle is given, the formula d = sqrt (4a/pi) can also be used to solve for the diameter, where "a" denotes the area.

    Full Answer >
    Filed Under:
  • Q:

    How do you find the area of a kite?

    A:

    The area of a regular kite can be determined by multiplying the lengths of the two diagonals and dividing the product by 2. If d1 and d2 are the lengths of the two diagonals of a kite, then the area of the kite can be found with this formula: (d1xd2)/2.

    Full Answer >
    Filed Under:

Explore