## Thursday, January 27, 2011

### Homework Book Pages 52 - 55

Page 53

3.

4.

Page 54

2. a)

* If you can't read the picture (;
5 x 3.2 = 16
5 x 3.2 = 16
5 x 11.5 = 57.5
5 x 11.5 = 57.5
11.5 x 3.2 = 36.8
11.5 x 3.2 = 36.8
16 + 16+ 57.5 + 57.5 + 36.8 + 36.8 =220.6 cm2
TSA = 22o.6 cm2

Cylinder Volume and Volume Problems

v= b x h^1 /2 x h^2
v= 12 x 15 / 2 x 15
v = 1,350cm^3

My assumptions is that the volume of the cheese from the block is 1,350 cm^3

Outside
d/2 = o.5m^2
v=π.r.r.h
v=3.14.o.5.o.5.10
v=o.785m^2.10
v=7.85m^3

Inside
d/2=0.4m^2
v=π.r.r.h
v=3.14.0.4^2.10
v=5.024m^3

7.85m^3 - 5.85m^3 = 2.86^3 or 2.9m^3

The volume of the culvert is 2.9m^3

#### 7 comments:

1. Great post Trisha, It's great you have the answers. Next time you should've added the questions, a link and a video.

2. Not bad Trisha. The pictures were a bit blurry, but it was nice that you bothered to add them. Like Duyen said, adding the question in would make this post a little more understandable and easier to follow. A link and video would be nice as well, but other than that this was pretty good.

3. Great job Trisha. Your picture were a bit blurry but i could still see that you did your work. Next time tell us the questions so we know. Other than that, great job.

4. Thanks Trisha! You helped me. Your pidtures weren't bad! Next time could you put the questions numbers though.

5. Nice job Trisha. I agree to all of them that the pictures were a bit blurry but they're not too bad and also you should have put the question. But you did a great job and add a video or a link next time.Good job.

6. Good job, Trisha! Thanks for adding the writing on the bottom which was smart but next time add a video or link if possible.

7. Cool. I think you did a good job Trisha, but maybe, next time, right underneath the pictures you could put the answers or what you did to get that. It would help me understand better, but this is just fine. You might want to add a video link later on, if you want to.