How to Figure Pipe Area in Square Feet

Written By
G.K. Bayne
G.K. Bayne
Published: Nov 6, 2009
Updated: Nov 20, 2021
2 minute read

The area of a circle is found by using the following equation: pi multiplied by the radius squared.

  1. Measure the inside diameter of the pipe. In this case, the pipe can have a full diameter measurement of six inches. The radius measurement of the pipe then would be three inches.

  2. Use the area formula described above and square the radius measurement of the six-inch pipe. This will entail multiplying three inches by three inches, which is equal to nine square inches. Now nine square inches by pi. This results in 28.27 square inches, the area in inches of the six-inch-diameter pipe.

  3. Convert the total square-inch measurement into square feet. There are 144 square inches in one square foot. This is found by multiplying 12 inches by 12 inches. To find the square footage of 28.27 square inches, divide this number by 144. The result is 0.19 square feet.

  4. Find the volume of a pipe that is 10 feet long. Multiply the area of 0.19 square feet by the overall length of 10 feet. The volume of the pipe is equal to 1.96 cubic feet.

  5. Calculate the liquid capacity of the pipe in gallons. Multiply 1.96 cubic feet by 7.48 gallons per cubic foot. The six-inch diameter pipe that is 10 feet long will hold 14.68 gallons of liquid.

The Drip Cap

  • Calculating pipe area in square feet will help you find the volume of a particular pipe.
  • Use the area formula described above and square the radius measurement of the six-inch pipe.
  • Multiply the area of 0.19 square feet by the overall length of 10 feet.
  • The volume of the pipe is equal to 1.96 cubic feet.

Resources

G.K. Bayne

G.K. Bayne is a freelance writer for various websites, specializing in back-to-basics instructional articles on computers and electrical equipment. Bayne began her writing career in 1975 and studied history at the University of Tennessee.

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