Wednesday, February 16, 2011

Diana's Homework Book Post.

Even numbers, Pages 78-79.

4. A)



6. A)

Both rectangular prisms have the volume of 200cm.


Both rectangular prisms have the volume of 10.5 m3.


The need to put 24.3m3 of water in the pool.

Here are some Videos to help you guys! (:

Comment if I did anything wrong.
Also , sorry that a couple of my pictures are not the right way they wouldn't want to rotate.

Chapter 7.3

r= d÷2 V=(pi.r.r)x h
r= 20÷2 V=(3.14x10x10)x40
r=10cm V=314 x 40

Popcorn Lover's:
r= d÷2 V=(pi.r.r)x h
r= 30÷2 V=(3.14x15x15)x20
r= 15cm V= 7065 x 20
V= 14'130cm³

Martha should buy the popcorn lover's one because it has a greater volume than the Jumbo one.Popcorn Lover's volume is 14,130cm³ and Jumbo's 12,560cm³.

Chapter 7.4

r=d÷2 V=(pi.r.r)x h
r= 1÷2 V=(3.14x0.5x0.5)x10
r=0.5m V= 0.785 x 10
V= 7.85m³

r= d÷2 V=(pi.r.r)x h
r= 0.8÷ 2 V=(3.14x0.4x0.4)x10
r= 0.4m V=0.5024 x 10
V= 5.024m³

You Subtract the volume of the inside from the volume of the outside.
7.85m³ - 5.024m³ = 2.826m³

The volume of concrete needed to make the culvert is 2.826m³


  1. Great Job Diana! it's organized, and laid out nicely. Great job on adding a video and a link. Also great job on adding a picture of your own work. Keep it up.

  2. Good job Deedee ;) Next time you should find better lighting (y) ;D anyways, keep up the good work!

  3. Good job Diana! Your scribe is easy to understand, and is neat. Also i liked how you have pictures, video and information. Next time add a link, Keep it up though!

  4. Great job Diana!
    I like how you used pictures of the questions, I also like how you put videos, and colour. Next time you should put a link in your work, also a flisti. Besides that everything is alright, keep up the good work.

  5. Good Job Diana! I like how you added pictures to show how you did it,and videos. Next time add a link. Overall Keep up the Goodwork!