## Friday, March 9, 2012

### Irena's Surface Area and Volume post

Rectangular Prism

Calculate Surface Area:

L x W

F= 6 x 10= 60m
S= 5 x 6= 30m²
T= 10 x 5= 50m²

Triangular Prism

Calculate Surface Area:

b x h / 2
9 x 8 / 2= 36
9 x 8/ 2= 36

L x W
5 x 8= 40cm²
10 x 5= 50cm²
9 x 5= 45cm²

Cylinder

Calculate Surface Area

Here's a link.
Here's a video.

b x h /2 x h
(base x height(1) divided by two x height(2)
3 x 5/ 2
15/ 2= 7.5m
7.5 x 8.5= 63.75m3
l x w x h
Length x width x height
20 x 8 x 16= 20560cm3

b x h /2 x h
(base x height(1) divided by two x height(2)
4 x 8= 32cm
32/ 2= 16
16 x 6.5= 104
3/8= 0.375
0.375 x 104= 39cm3

pie r2 x height
d/2= r
12/2= 6
3.14 x (6 x 6)= 113.04
113.04 x 15= 1695.6cm3

Here's a link about volume
Here's a video about volume:

#### 2 comments:

1. AMAZING JOB Irena! I really liked how your post was so colorful it caught me eye alot. I also enjoyed your video and link I thought that they were pretty helpful for me as well as other students. It also looked like you took your time and tried your best to make it awesome thats all that matters. So great job overall and keep up the hard work.

2. AMAZING JOB Irena! I really liked how your post was so colorful it caught me eye alot. I also enjoyed your video and link I thought that they were pretty helpful for me as well as other students. It also looked like you took your time and tried your best to make it awesome thats all that matters. So great job overall and keep up the hard work.