1 / 12

11.5 – Areas of Circles and Sectors

11.5 – Areas of Circles and Sectors. Area of a Circle:. A =  r 2. Area between two radii in a circle. Area of a Sector:. 1. Find the area of the circle. A =  r 2. A = (7) 2. A = 49 cm 2. 1. Find the area of the circle. A =  r 2. A = (6.5) 2. A = 42.25 in 2.

osma
Download Presentation

11.5 – Areas of Circles and Sectors

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. 11.5 – Areas of Circles and Sectors

  2. Area of a Circle: A= r2

  3. Area between two radii in a circle Area of a Sector:

  4. 1. Find the area of the circle. A= r2 A= (7)2 A= 49cm2

  5. 1. Find the area of the circle. A= r2 A= (6.5)2 A= 42.25in2

  6. 2. Find the area of the shaded figure. A = 4 + 4 4 r2 2 A = + bh (2)2 2 A = + (4)(4) 4 2 A = + 16 A = ( ) 2 + 16 ft2

  7. 2. Find the area of the shaded figure. 4in A = – 8in r2 s2 – A = 8in (4)2 (8)2 – A = 16 64 – A = ( ) 16 64 – in2 A =

  8. 3. The area of a circle is 58 square inches. Find the diameter. Round to two decimal places. A = r2 58 = r2   18.46 = r2 4.30in = r d = 8.59in

  9. 4. Find the area of sector formed by ACB. Round to two decimal places. Leave answers in terms of pi. 360x = 6000

  10. 5. Find the area of sector formed by PSQ. Round to two decimal places. Leave answers in terms of pi. 360x = 40000 x = 11.11m2

  11. 6. Find the area of sector formed by ACB. Round to two decimal places. Leave answers in terms of pi. 110° 360x = 7040

  12. 7. Find the area of sector formed by PSQ. Round to two decimal places. Leave answers in terms of pi. 282° 360x = 7050 

More Related