1 / 25

Lesson 6-8 Pages 270-273

Lesson 6-8 Pages 270-273. Geometry: Perimeter and Area. Lesson Check 6-7. What you will learn!. How to find the perimeters and areas of figures. Vocabulary. What you really need to know!.

woody
Download Presentation

Lesson 6-8 Pages 270-273

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. Lesson 6-8 Pages 270-273 Geometry: Perimeter and Area Lesson Check 6-7

  2. What you will learn! How to find the perimeters and areas of figures.

  3. Vocabulary

  4. What you really need to know! The distance around a geometric figure is called the perimeter. To find the perimeter of any geometric figure, add the measures of its sides.

  5. 9 units 5 5 units 9 Perimeter = 28 units

  6. What you really need to know! The perimeter of a rectangle is twice the length l plus twice the width w. P = 2l + 2w

  7. 9 units P = 2l + 2w P = 2×9 + 2×5 5 5 units P = 18 + 10 P = 28 9 Perimeter = 28 units

  8. What you really need to know! The measure of the surface enclosed by a geometric figure is called thearea.

  9. 9 units 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 5 units 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 Area = 45 units2

  10. What you really need to know! The area of a rectangle is the product of the length l and width w. A= L × W

  11. Length (9 units) Width (5 units) Area = l× w Area = 9 × 5 Area = 45 units2

  12. Example 1: 40 ft Find the perimeter of the rectangle: 18 ft 2 ft P = 2l + 2w P = 2•18 + 2•2

  13. Example 2: Find the perimeter:

  14. Example: 3 Find the area of the surface of the reservoir shown below. A = lw 5/8 mi 4 mi

  15. Page 272 Guided Practice #’s 3-7

  16. Read: Pages 270-271 with someone at home and study examples!

  17. Homework: Page 272-273 #’s 8-28 even #’s 30-43 Lesson Check 6-8

  18. Page 579 Lesson 6-8

  19. Lesson Check 6-8

  20. Homework: Page 272-273 #’s 8-17, 23-27 all #’s 30-43

More Related