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# Perimeter & area

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### Perimeter & area

1. 2. Length around the outside A border Picture frame
2. 3. Add all sides together + + + +
3. 4. 500 yrd 1,000 yrd P=1000+1000+500+500 =3000 yards http://www.turnstiles.us/index-old.htm http://www.gundogsupply.com/prf-304w-.html
4. 5. Space (a 2-D object) takes up/covers *(In square units) Frame with picture
5. 6. Square/Rectangle A=b*h b=base h=height h b
6. 7. 94 ft 50 ft A=94*50 =4700 square feet http://www.gundogsupply.com/prf-304w-.html http://www.realbuzz.com/articles/how-playing-basketball-gets-you-fit/
7. 8. Triangle A=1/2*b*h b=base h=height h b b h
8. 9. 3in 3 in A=1/2*3*3 =4.5 square inches http://commons.wikimedia.org/wiki/File:Isosceles-right-triangle.jpg http://www.ehow.com/how_4714451_fold-fancy-napkin.html
9. 10. h=1000mi b=1000mi A=1/2*1000*1000 =500,000 square mile s http://www.bermudastyles.com/bermuda/the-bermuda-triangle.php
10. 12. Circumference=2∏r r=radius ∏ =3.14 (constant) http://www.newbedford.k12.ma.us/elementary/gomes/stjohn/Subjects/Math/Geo/Geometry%20Worksheets.html
11. 13. C=2*3.14*2 =12.56 ft http://www.freakingnews.com/Hula-Hoop-Kittens-Pictures-43539.asp 4 ft Diameter=4ft Radius=2 ft
12. 14. Area=∏ r 2 r=radius ∏ =3.14
13. 15. 4in A=3.14*4*4 =50.24 square inches http://www.teamdc.org/TeamLinks.htm
14. 16. <ul><li>Squares/Rectangles/Triangles http://www.bgfl.org/bgfl/custom/resources_ftp/client_ftp/ks2/maths/perimeter_and_area/index.html </li></ul><ul><li>Area Circle http://www.factmonster.com/math/knowledgebox/player.html?movie=sfw41560 </li></ul><ul><li>Circumference Circle http://www.factmonster.com/math/knowledgebox/player.html?movie=sfw41551 </li></ul>
15. 17. Complex shapes Area and perimeter