Any one know of a good program for solving volume and surface area of geometrical figures?

[burmaz]

Any one know of a good program for solving volume and surface area of geometrical figures? For example, i would like to find the surface area and volume of a pyramid with a equilateral triangle base, but i only have two dimensions, is there a program that can solve for the surface area and volume using logic to find the neccessary diminsions?

 

[hamburglar]

I believe you need to have more information