Posted by **David** on Friday, December 7, 2012 at 2:04am.

the work i got from my math teacher says

Determine the surface area of each right rectangular prism to the nearest square unit.

Any Help with that?....

- Math 10-3 -
**Reiny**, Friday, December 7, 2012 at 8:06am
A "right rectangular prism" is just a fancy mathematical name for an ordinary standard box with a certain length, width and height.

the surface area would consist of the 6 faces.

If the sides are all the same, you have a "cube"

if the sides are all different, you have 3 pairs of equal faces

e.g. for sides of 5 , 6, and 7

surface area = 2(5x6) + 2(5x7) + 2(6x7)

= 60 + 70 + 84 = 214

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