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Mathematics 11 Online
OpenStudy (anonymous):

Can someone please explain to me how to find the surface area of a triangular pyramid?

OpenStudy (anonymous):

@wolfe8

OpenStudy (wolfe8):

Sure. What kind of base does it have?

OpenStudy (anonymous):

a triangular one

OpenStudy (anonymous):

What size is the base?

OpenStudy (wolfe8):

Ok well, if you imagine it, it looks like this http://sketchtoy.com/58721270 and when you open it up, you will see it is like this http://sketchtoy.com/58721294 Get it so far?

OpenStudy (wolfe8):

So then, you are basically adding 3 identical triangles and and the triangular base(if it has different sides)

OpenStudy (wolfe8):

And then for each of those triangles including the base http://sketchtoy.com/58721402

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