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DIAGRAMS &

EQUATIONS

Equation1.png

CIRCUMFERENCE OF A CIRCLE

C = 2πr = πd

c = Circumference

r = Radius

d = Diameter

π = 3.14159

CIRCUMFERENCE OF AN ELLIPSE

R = larger radius

r = smaller radius

C = (R + r)π

Equation2.png
Equation3.png

CIRCUMFERENCE OF AN ARCH

CL = Chord Length

CH = Chord Height

L = Arch Length

OR = Outside Radius

IR = Inside Radius

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Copyright 2025 © FLEX-C, Inc. All Rights Reserved.

Flex-C Trac, Flex-C Plate, Flex-C Angle – Canada 2330125, New Zealand 507672, Australia 760162, Europe 1073805, China ZL01815011.X and other patents pending. Hammer-Lock – US Patent 8,453,403. Canadian Patent for Hammer-Lock 265642. Flex-C Header – US Patent 7,210,271. Three Legged Dog – US Patent 6792733. Quick Qurve Plate – 7,941,983. Registered Trademarks: Flex-C Trac in US, Australia, New Zealand, Canada and Europe. Three Legged Dog in the US and Canada, Quick Qurve in the US and The Curved Wall and Ceiling People in the US.

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