The perimeter of the base is 30 mm. The height of the prism is 7 mm. What is the surface area of the prism?

Question

ledah · Answer

even though its a widely asked question, do you know the formula for surface area? 
(I am not trying to make you feel dumb, just curious)

anonymous · Answer

yes

ledah · Answer

well anyway, I'm going to assume its a rectangular prism right? or is there no image for it?
bah, i wont barrel you with questions inside your own question, so lets get down to the part where we solve this thing.

ledah · Answer

okay so im my eyes I would see what numbers got 30mm. does it say?

anonymous · Answer

ok the numbers are A. 445 mm2  B. 320 mm2  C. 265 mm2  D. 92 mm2

ledah · Answer

does the prism look similiar to this one?

anonymous · Answer

it doesn't have a picture

ledah · Answer

hm thats why i dont like math sometimes. anyway prism i guess we can assume its any shape. but its has to be one with a perimeter of 30mm, what numbers can you come up with that would equal 30 off the top of your head.

anonymous · Answer

First numbers I thought of was 15 or 60

ledah · Answer

what formula do you use for surface area? can you post that as well?