## Tuesday, February 1, 2011

### Marie's Volume Post

Things to remember:
• The bases are circles
• Radius is half a diameter
• Diameter cuts a circle in half
• Circumference is the perimeter of a circle
• Pi is the ratio between circumference/diameter or 3.14

Formulas:
Circumference - pi (d) = c
Diameter - 2r = d or c/pi

Area of a circle:
pi (r²) or pi (r) (r)

Net of a cylinder:

Formula:
lxw = a

pi (r) (r) = a
d = 2r
r = d/2

c = pi(d)

Here are the answers on our homework.
*I'm only showing one of each (diameter, circumference, radius) because Mr. Harbeck told me to.*

Here is a link on cylinders.

A video to help you learn the surface area of a cylinder:

Cylinder Volume and Volume Problems

7.3

7.4

1. Good Job Marie! I liked how you put a video,link,and pictures. Keep up the Goodwork!

2. Great post Best! ;) I liked how you got showed your work with color and it was very easy to understand. It was also neat as well. You also added a video and a link to help us. Nothing negative to say about it. Keep up the good work!!

3. GREAT JOB MARIE! Your scribe is very well done, you included everything. It has right amount of colors, pictures of your work, a video, and a link. Nothing negative to say. Keep it up!!!

4. Good job Marie! I liked how you have colors, pictures, video, and link! Also, your scribe is easy to understand! Keep it up!

5. Great job Marie! I liked how you showed your work, added colors, pictures, a link, and a video. Also, your scribe is well organized and easy to understand. Keep it up! (:

6. Excellent Job Marie! Your post is very organized and well done. You have colors, pictures of your work, videos and all of those stuff to have a perfect scribe. No errors for now, Keep it up!

7. Goood job Marie! It's very organized, I like the colors and the pictures. Good job on putting a video, and a link. keep up the good work!

8. Great Job Marie! I like how you added in a picture of your own work, and explaining it. Also great job on adding a video and link to help us more. Your post is organized and easy to read. Keep it up!

9. Thank you for the comments! I really appreciate it.

10. Sorry for my late comment :)
Great job Marie! I really like how you have everything organized clearly, Your pictures are very great. Keep up the great work Marie!

11. Awesome job Mari! The pictures were clear and the scribe post was well organized! It was easy to read along with the video and link. Keep up the great work!

12. Well done Marie! The pictures of your own work were helpful and clear. Keep up the excellent work.