rectangular prism, triangular prism and pyramyd
This applet allows you to find the surface area, perimeter, and volume of the 3-dimentional rectangular prism, triangular prism, and pyramid. Grab the blue buttons to stretch the shape in different directions. As the shape changes in length, width or height, its surface area, perimeter, and the volume changes. You can click on the show color button to see the shapes in black and white.