1 / 16

AOB = Sector / Juring

Arc lengths and Areas of Sectors. A. •. o. B. AOB = Sector / Juring. = Arc / Busur. Created by ﺠﻴﻄ for Mathlabsky.wordpress.com. Created by ﺠﻴﻄ for Mathlabsky.wordpress.com. SECTOR. ARC. Areas of sectors. Example : Area of circle = 40 cm 2. A. Area of sector AOB = ?.

tejano
Télécharger la présentation

AOB = Sector / Juring

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Arc lengths andAreas of Sectors A • o B AOB = Sector / Juring = Arc / Busur Created by ﺠﻴﻄ for Mathlabsky.wordpress.com Created by ﺠﻴﻄ for Mathlabsky.wordpress.com SECTOR ARC

  2. Areas of sectors Example : Area of circle = 40 cm2 A Area of sector AOB = ? 1800 • AOB = 20 cm2 O B

  3. B Example : Area of circle = 40 cm2 Area of sector AOB = ? AOB = 10 cm2 A O • B Area of sector AOB = ….? A a0 • O

  4. FORMULA P • a0 O Q

  5. Exercise: 1. Given area of circle 60 cm2 , find the area of sector POQ! P 600 • O Q 2. Find the area of sector KOL if radius = 7 cm! K • O 1200 L Click the sector for solve

  6. 1. A = 60 cm2 P 600 • O Q

  7. 2. r = 7 cm K • O 1200 L

  8. B C O • b0 a0 D A

  9. Exercise: AOB = 20 cm2 , COD = ….? C B O • 1200 800 A D

  10. Arc lengths Example : Circumference of circle = 24 cm A Arc length AB = ? AB = 12 cm 1800 • O B

  11. Example : Circumference of circle = 24 cm P Arc length PQ = ? PQ = 6 cm • O Q M N a0 • O

  12. Exercise: Find arc length AB 1. Circumference of circle = 36 cm A 1000 • O B 2. Radius of circle = 7 cm 2400 A • O B Click the arc for solve

  13. 1. Circumference of circle = 36 cm A 1000 • O B

  14. 2. Radius of circle = 7 cm 2400 A • O B

  15. C B O • b0 a0 A D

  16. Example : Find arc length CD if arc length AB = 40 cm C B Let arc CD = x O • 1000 800 A D

More Related