## Monday, April 14, 2008

### Kiahna's Bob

Kiahna's Bob

Everything You know about Rectangular Prisms

Surface area of A Rectangular Prism
To figure this out you have to cut the box in half like so!
insert pic

then you have to do a formula for each side!
For the Front and the Back of the Box you have to use this formula Hieght x Length = ??
For the Right side and the Left side of the box you have to use the formula Height x Width = ??
For the bottom and top you have to use the formula Length x Width = ??
then for each of them yuo multiply it by two and that is your answer
Now that we know all of this lets give out the numbers Hieght is 10cm the Length is 5cm and the width is 2 cm.

so lets figure it out

Font and Back side: h x L = 10cm x 5cm x 2 = 100cm
Right and left side: H x W = 10cm x 2cm x 2 = 400cm
Bottom and Top: L x W = 5cm x 2cm x 2 = 100cm

Now you add it all together to get the surface area 50cm+20cm+10cm= 80cm²

Volume of a Rectangular prism

to find the volume you have to do length x width x hieght =

or you can do base x hieght =

so the measurments are length 3cm height 5cm width is 1cm

so L x W x H = 15 cm thirds

#### 1 comment:

vina8-16 said...
This comment has been removed by the author.