Length, Surface Area, Volume By Mark Dufresne This program is excellent for calculus students. Given an equation and upper & lower bounds, it will find the length, surface area, and volume of the solid. To use: It will allow you to input the equation in terms of X or Y. Pick which one you are using. Then input the equation. It will use the variable "T" NOTE: BE SURE TO SURROUND EQUATION IN QUOTES Input the lower and upper bounds that you are analyzing between. Then it asks which operation you want to use. Length is easy, it gives you the length of the line made by the function between lower and upper bounds Surface Area: Gives you the surface area of the solid formed when the function is rotated around the axis. around X-axis when inputing in f(x), Y-axis when inputing in terms of Y Volume: You can use either one or two equations. If you want only one equation, it will use the one inputted previously. If you have 2 equations that you need to find volume between, use two equations. It will remember the first one, just input a second surrounding it in quotes. Then it asks you which axis you want to rotate the function(s) around. Finally, you can rotate it around any line. If you want it around the axis, just input 0, otherwise input the number you want to rotate it around.