SOLUTION: my teacher said that we have to figue out the surface area of a triangular prism she did not tell us the formula
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Question 248347: my teacher said that we have to figue out the surface area of a triangular prism she did not tell us the formula
Found 2 solutions by richwmiller, solver91311:
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
but did she give you any measurements?
repost with the measurements
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!
The Surface Area of ANY prism is simply the sum of the areas of all of the surfaces of the prism. A triangular prism has 2 bases and three faces. If it is a right triangular prism, then the total surface area of the 3 faces is the perimeter of the base times the height. The area of one of the bases is just one of the sides times its associated triangle altitude divided by 2. But since you need the area of two bases, just base times altitude gives you the area of both bases.
In sum, for any right prism (no matter what the shape of the base is):
Where 
is the area of a base, 
is the perimeter of a base, and 
is the height of the prism.
For a triangular prism the above is equivalent to:
where 
is the measure of the base of the base triangle and 
is the altitude of the base triangle.
John
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