Varsity Tutors
Varsity Tutors: Hotmath: Practice Problems: Volumes of Solids and Surface Areas
Twenty-five problems cover the topics of volume of solids and surface area. They are given with each step to the solution cleverly revealed one at a time. You can work each step of the problem then click the "View Solution" button to...
National Council of Teachers of Mathematics
The Math Forum: Ask Dr. Math: Volume of a Triangular Tank
This question and answer site solves a volume problem for a triangular tank.