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Mathematics
Mensuration
Perimeter
Circular Circumference
Circular Circumference
What You Need to Know
Apply the formula
2
π
r
2\pi r
2
π
r
or
π
d
\pi d
π
d
to calculate circle circumference.
Calculate the arc length of a sector.
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Key Terms & Definitions
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Rectilinear Perimeter
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Composite Perimeter
