DIAGRAMS &

EQUATIONS

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

CIRCUMFERENCE OF AN ARCH

CL = Chord Length

CH = Chord Height

L = Arch Length

OR = Outside Radius

IR = Inside Radius

4000 NW 39th St, Suite B

Oklahoma City, OK 73112

Toll Free

866.443.FLEX (3539)

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Copyright 2020 © 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.