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What is arc length? What is a sector? How do you find arc length?

Arc Length and Sectors. What is arc length? What is a sector? How do you find arc length? How do you find the area of a sector?. Arc Lengths. B. Arc lengths are the pieces of the circumference cut by central angles.

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What is arc length? What is a sector? How do you find arc length?

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  1. Arc Length and Sectors What is arc length? What is a sector? How do you find arc length? How do you find the area of a sector?

  2. Arc Lengths B Arc lengths are the pieces of the circumference cut by central angles. Arc lengths are measured in units of measure like inches and centimeters. Can arc length be measured with a ruler? A Arc length

  3. Sector Area Sector area is the wedge-shaped interior regions of a circle formed by central angles.

  4. Definition A sector of a circle is a region formed by two radii and an arc of circle. ABC is a sector of סּB A C B

  5. L 125° 12 cm J K is a central angle of סּK Find the arc length (L) of JL to the nearest tenth. C = 2 π r (circumference) The arc covers 125° out of a total of 360° or

  6. Formula for Arc Length

  7. L 125° 12 cm J K is a central angle of סּK Find the area of sector JKL to the nearest tenth. The arc covers 125° out of a total of 360° or

  8. Formula for Sector Length

  9. A 103° B 20 in C In סּC, mAB = 103° andAC = 20 in. Find the area of sector ACB to the nearest tenth. 359.5 Find the length of arc AB to the nearest tenth. 36.0

  10. A 30° C If the circumference of a circle is 21π, what is the length of a 30° arc? B

  11. What is an arc length? Arc lengths are the pieces of the circumference cut by central angles. • What is a sector? Sector area is the wedge-shaped interior regions of a circle formed by central angles. • How do you find arc length? • How do you find the area of a sector?

  12. Assignment 8-2B Page 572, 1-8, 14-19 No formulas with numbers No credit

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