Ask Experts Questions for FREE Help !
Ask
    Muahahaha45's Avatar
    Muahahaha45 Posts: 1, Reputation: 1
    New Member
    		  
    #1

    Apr 8, 2007, 08:25 PM
    Surface Area of a icosahedron
    Well its my first time using this and I hope I get the answer pretty quick
    I'm doing a project of this and I made it out of wood... and I need to find the S A of a icosahedron... and the side length of 1 of the triangles is 4 inches...

    I'm kind of lost on how to do this and help would be appriated (Sorry for spelling)
    Capuchin's Avatar
    Capuchin Posts: 5,255, Reputation: 656
    Uber Member
    		  
    #2

    Apr 9, 2007, 04:46 AM


    where a is the length of one of the sides.
    asterisk_man's Avatar
    asterisk_man Posts: 476, Reputation: 32
    Full Member
    		  
    #3

    Apr 9, 2007, 09:52 AM
    (same as capuchin but with more tasty explanation goodness)
    a regular icosahedron is made of 20 equilateral triangles.
    the area of an equilateral triangle is and since you have 20 of them the surface area of an icosahedron is
Not your question? Ask your question View similar questions
 

Question Tools Search this Question
Search this Question:

Advanced Search


Check out some similar questions!

Surface area and volume of hexagonal prisms? [ 6 Answers ]

:oCould someone please tell me the formula for finding the volume and surface area of a hexagonal prism? My entire PROBE class is confused! Please help!Thanks! :o

Hexagonal surface area and volume [ 5 Answers ]

How to calculate the surface area and volume of a hexagonal prism?

Total surface area of cylinder [ 2 Answers ]

This is countrygirl's daughter, wondering if someone could give me the formula for the"total surface area of a cylinder"? Thank you.

Surface area of parallelepiped [ 10 Answers ]

Can someone please explain to me how I would get the surface area of a parallelepiped if I'm given three vectors of the parallelepiped. *parallelepiped is parallelogram only 3-dimensional. Also what's the difference between geometric and algebraic vectors? Edit: I know surface area = 2lw...

Geometry (surface area) [ 15 Answers ]

Hello! I am having difficulty answering this question. If someone can please tell me how to solve these geometry problems, I will be very grateful! Thank you in advance! =) Find the surface area of the following regular polyhedra to the nearest cm^2 (squared). a. Tetrahedron with edge length...

View more questions Search