# Square based prism general rule

Tags:
1. May 4, 2015

### ashclouded

• Member warned about posting with no effort
1. The problem statement, all variables and given/known data
See attached picture

2. Relevant equations

For any rectangular prism, the formulas are the following:

Surface Area = 2(lw + wh + hl); l is length, w is width, and h is height.

Volume = lwh; l is length, w is width, and h is height.

For a square-based prism, the formulas are simplified into the following:

Surface Area = 2(s^2 + 2sh); s is side of square face and h is height.

Volume = s^2h; s is side of square face and h is height.

3. The attempt at a solution
I'm not sure how to start the question at all

File size:
38.1 KB
Views:
104
2. May 4, 2015

### BvU

You can't use a formula for a specific subgroup (rectangular prisms) for your square-based prisms ! The latter are more general than just rectangular.

Is there anything you did or found in question 2 that is relevant for the current exercise ?

3. May 4, 2015

### ashclouded

I don't have the question and answe on me but I will post it tomorrow
Thanks for replying, I've no idea how to do this and it's bugging me

4. May 4, 2015

### BvU

Well, some good spirit warned you (for obvious reasons), but also moved to the calculus part of PF. Why would that be ?

Know someone interested in this topic? Share this thread via Reddit, Google+, Twitter, or Facebook

Have something to add?
Draft saved Draft deleted