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

8 comments:

  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.

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  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.

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  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!

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  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.

    ReplyDelete
  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.

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

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  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. (:

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  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.

    ReplyDelete