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Calculating Circles

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Calculating Circles

Circle Example # 1

Example 1

Length Around a Circle, 18' Round Swimming Pool

18' x 3.1416 = 56.55' (total linear feet around pool)

To add 2' of stone around this pool 3' deep:

56.55' x 2' = 113.10'

113.10' x .25 (3" depth) = 28.28 Cubic Feet

28.28 / 27 = 1.05 Cubic Yards

Example 2

Square Footage Inside a Circle, 24' Round Swimming Pool

24' x 24' = 576'

576' x .7854 = 452.39 Square Feet (total inside pool)

To add 4" of sand evenly across pool:

452.39' x .33 (4" depth) = 149.29 Cubic Feet

149.29 / 27 = 5.53 Cubic Yards

To be safe, always round up. You would order 6 Cubic Yards of sand.

Circle Example # 2

Square Footage Inside of a Circle:

Length x Width x .7854 = Square Feet



Length Around a Circle:

Diameter x 3.1416 = Linear Feet Around a Circle

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Due to the nature of our earth's product: color, sizing, special characteristics and availability cannot be guaranteed.
Please contact our sales department for further information and recommendations.
The Stone Store: 1-888-766-4242, Option # 2