a) l = 15cm, w = 12cm, h = 3cm

v = l x w x h

15cm x 12cm = 180cm2

180cm2 x 3 = 540cm3

b)

v = l x w x h

8.5m x 7m = 59.5m2

59.5m2 x 2m = 119m3

c)

v = l x w x h

20cm x 8cm = 160cm2

160cm2 x 16cm = 2560cm3

6. Calculate the volume of each right triangular prism. Express the answer to the nearest tenth.

a)

v = b x h1/2 x h2

7.2 x 4.5cm/2 = 16.2cm2

16.2cm2 x 10cm = 162cm3

b)

v = b x h1/2 x h2

5 x 3/2 = 7.5cm2

7.5 x 8.5 = 63.8m3

c) A prism where the case of the triangle is 4m, the height of the triangle is 5m, and the prism height is 12m.

v = b x h1/2 x h2

4 x 5/2 = 10m2

10m2 x 12 = 120m3

8. Wab needs to buy drinks for the summer barbeque. Both containers are the same price. Which one holds more?

apple juice:

v = l x w x h

6cm x 9cm = 54cm2

54cm2 x 4.5cm = 243cm3

orange juice:

v = l x w x h

6cm x 10cm = 60cm2

60cm2 x 3.75 = 225cm3

Apple juice holds more juice (y)

Here is are links to help you out with finding out prism: 1, 2, and 3.

Here's a video:

URL of pictures:

http://www.clker.com/clipart-3934.html

http://www.ifood.tv/blog/apple-juice-health-benefits

Please tell me if I did any mistakes or what I can do better next time. (:

Cylinder Volume and Volume Problems

Chapter 7.3:

v = π r r h

v = (3.14x5cmx5xm) x 23

v = 1805.5cm3

**Chapter 7.4:**

**Volume of cylinder:**

**Volume of triangular prism:**

r=d/2 bxh1/2 x h2

r=25/2 40x35/2 x 140cm2

r=12.5cm2 = 98000cm3

v=π r r h

v= (3.14x12.5x12.5)x100

v=49062.5cm3

*98000cm3 - 49062.5cm3 = 48937.5cm3*

**Video:**

* I meant to say cubed when I said squared on the part where i was supposed to say cubed :P

Good job Angel! I liked how you have info/showed your work, had pictures, a video, and gave props to the owners of the pictures. Although, next time, add a link. Keep it up!

ReplyDeleteAwesome job Angel! It looks well organized and neat! It really looks like you planned it out and put alot of effort into it! Keep this up and you'll be fine. Keep up the great work!

ReplyDeleteGreat job Angel!

ReplyDeleteI like how you used pictures, links, a video, and colour. Next time you should put a flisti in your work. Besides that everything is alright, keep up the good work.

Good Job Angel! I liked how you added all of the things and it is well organized. Keep up the Goodwork!

ReplyDeleteGood job Angel IT well organized and neat. I like how you put link picture and a video. Keep it up

ReplyDelete