Calculate the area, arc length, and perimeter of a circle sector.
Sector Inputs
Sector Dimensions
Area (A)39.2699
Arc Length (L)7.8540
Perimeter (P)27.8540
Circle Sectors
A sector is a portion of a circle enclosed by two radii and an arc. It looks like a slice of pizza. The size of the sector is determined by the central angle.
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Pro Tips
If using degrees, convert to radians first: Rad = Deg × (π/180).
The perimeter includes the arc length plus two radii: P = L + 2r.
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Fun Facts
"Pac-Man's shape is a circle with a sector removed."
"Pie charts rely entirely on sectors to represent proportions."
