Sectors segments arcs and chords are different parts of a circle. The perimeter of a segment of a circle is the sum of arc length and the chord of a circle. Circle Sector Formulas Area Arc Length Maths Algebra Formulas Learning Mathematics Math Methods A r² θ 2 15² π4 2 8836 cm². . The formula to find the perimeter of a segment of a circle is given by θ π 180 r l. Give your answer to 3 3 decimal places. To find the arc length for an angle θ multiply the result above by θ. A sector of a circle is the proportion of a circle where two of the sides are radii. Study with Quizlet and memorize flashcards containing terms like Area of Sector Formula Circumference of a Sector Formula Opposite of sin and more. Calculate the perimeter of a sector quadrant Calculate the perimeter of a sector of the sector. L r θ 15 π4 1178 cm. Area of a Sector Formula. The circumference formula can be used to solve problems.