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**18**## Circles - Sectors, Arcs, Segments and Perimeters

**Length of Arc, Perimeter and Area of Sector**

Perimeter \[{}=r \theta +2r\]

**Area and Circumference of Circle**

**Area of Segment**

\[\theta\]

on this page is in radians and your calculator should be in radians mode. #### Add comment

## Comments

Admin says: Rock'n Roll

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