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disturbed_broken's avatar

What is the formula for surface area of composite solids?

Asked by disturbed_broken (753 points ) January 17th, 2010 from iPhone

Square prism
rectangular prism
triangular prism
I am doing homework and I forgot my formula sheet at school.
please help.

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2 Answers

denidowi's avatar

Cylinder = 2(Pi x r^2) + 2Pi x rh = 2Pi x r (r + h)
Triangular prism = 2 x Base x Perpendicular Height, as it has 4 sides – all triangles

That should give you a good start LOL!

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