What's the surface area for a________ with edge length 5
(tetrahedron)
Hexahedron
Octahedron
Dodecahedron
Icosahedron
Im stressin, need help

AMHD don't normally give a straight answer to this sort of question. However, it's Thursday I'm out tonight with friends so...
Octahedron

The rest should be easy. Learn to use the Internet, amazing what typing "What is a Tetrahedron" into a search engine gets.

Remember the answers are all there, just phrase your question right and bingo!