Wednesday, February 2, 2011

Cylinder Homework



r= d/2
r=7/2
r=3.5cm






=2 .π. r. r+ 2.π.r.h
=2. 3.14 . 3.5 . 3.5+2 . 3.14 . 3.5 . 7
= 76.93 + 153.86
= 230.79cm 2





r=d/2
r=15/2
r=7.5cm







=2 .π. r. r+ 2.π.r.h
=2 . 3.14 . 7.5 . 7.5 + 2 . 3.14 . 7.5 . 18
=353.25 + 847.8
=1201.05cm 2















=2 .π. r. r+ 2.π.r.h
=2 . 3.14 . 6.5 . 6.5 + 2 . 3.14 . 6.5 . 20
=265.33 + 816.4
=1081.73cm 2

A link to about cylinders:








r= d/2
r=8/2
r=4m

v=( r x r) x h
v=(3.14 x 4 x 4) x 10v=50.24m 2 x 10
v= 502.4m 3

502.4/2
=251.2m 3





















Then you subtract the volume of the smaller cylinder to the bigger cylinder which will give you the amount of concrete needed for the culvert.

Concrete= 5.024m 3 - 7.85m 3
Concrete= 2.826m 3






11 comments:

  1. Good job Ryan! I liked how you have a video, pictures, link, and information. Also, your scribe is neat & organized. Keep it up!

    ReplyDelete
  2. Good job Ryan! I liked how you added pictures showing your own work. Also, I liked how you added a link and a video. Your scribe is well organized. Next time, you might want to add links to games and colors. Keep it up!(:

    ReplyDelete
  3. GREAT JOB RYAN! Your scribe is organized. I liked the way you included a video, link, and pictures. Next time, try to take a picture of your own work instead of using paint. Keep it up!

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  4. Great Job Ryan! I liked how you added in links, pictures of your work and a video. However, you could've added colors or gaming sites about cylinder to your scribe to make it better. Keep it up!

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  5. Good Job Ryan! I liked how you added a link,video,pictures and how you did it. I clicked on your link it doesn't work :P Next time put links to gaming sites like what they said. Anyways keep up the goodwork!

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  6. Good job ryaan, next time you should add color. I liked how you added pictures of the work, the formulas, videos, and a link. keep it up!

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  7. Great Job Ryan! I like how you added in a picture and explaining it. Also great on adding a video and link to help us more, your post is organized and easy to read. Keep it up!

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  8. Great job Ryan! I like your the way you have described the work. Your post is well organized. Keep up the great effort and work!

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  9. Great job Ryan! It looks simple and easy to read. The link, video, and images were helpful. Keep up the great work!

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  10. Great job Ryan! I like how the drawings were clear. The video,link and images were helpful.Keep it up!

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  11. Gwed job Ryan! Very organized scribe. Keep it up! Though your numbers in your pictures look kinda funny. ;p

    ReplyDelete