## Wednesday, June 16, 2010

### exam review circles

Exam review : Circles

300 ugly kids were asked what is their favorite color. how many like blue? how many like green? how many like gold?

Blue: 75 kids
Green:90 kids
Gold:135 kids

What is the estimated ratio of circumference to diameter? 3.14:1
Find the circumference when the radius is 6cm/
R=D simplified formula > C=2 3.14 r
2(6)=d
12=d
C=3.14D
C=3.14(12)
C=37.68cm

Find area when diameter is 10m
R=d/2
R=10/2
R=5
A=3.14 r squared
A=3.14 5 squared
A=78.54 squared

The measure of a sector is 20% of the data. what is the central angle for this sector?
20% of 360
0.2 x 360=72 degrees

I have a pool with a radius of 6m. my yard is 30m by 15m. how much space do i have left in my yard
A yard=l x w r=pi r squared how much left= 450m squared - 113.10=336.9
= 15 x 30 r=113.10
= 450m squared

1. Awesome post John! I like how it was all very neat and well organized, and how you used different font colours. Next time you should add a link aswell and maybe more pictures.

2. Nice post John! It's very organized and neat. Next time you should add a link and a video. Also next time try to make your picture a little bigger.

3. Nice post John. It looks very organized and neat. I also like the picture you drew. Next time please add a video and a link. Also use colors that stand out more. Other than that, great job!

4. Awesome post John! I like how it was all very neat and well organized.I also like the picture you drew but next time you should make it bigger and please add a video and a link. Overall Great job.

5. Nice post John. I like how your scribe is neat and organized. I also like the colors that you used. Next time, you should add a video and a link. It would have been nice if you made the picture bigger. Other than that, great job.

6. Good job, John!! Your post was easy to read but you forgot to put a video and a link.

7. Great Job, John. I like your post very neatly and understandable but you should make your pictures bigger..i couldnt read the pictures. You forgot the link and a video but you did an awesome blog. (:

8. Great post, John. It was very neat and organized. Next time, you should add a video and a link. Also make the picture a little bigger. Other than that, good job.

9. 在莫非定律中有項笨蛋定律：「一個組織中的笨蛋，恆大於等於三分之二。」......................................................................

10. 一個人的價值，應該看他貢獻了什麼，而不是他取得了什麼.................................................................

11. 人生的「三部曲」應該是無愧的昨天，充實的今天，與充滿希望的明天。..................................................

12. 人必須心懷希望，才會活的快樂，日子才過得充實,有意義,有朝氣,有信心。............................................................

13. blog有留言互動才好玩~~希望留言能支持您的更新動力!!!............................................................

14. Some people cannot see the wood for the trees.............................................................