This is sort of the sequel to my other game "Area Calculator". This has the same idea. Enter which shape you want to find the perimeter of. Right now, you can only do a square, rectangle, circle, or triangle. Enter the numbers needed. Area Calculator: http://scratch.mit.edu/projects/35975832/ Volume Calculator: https://scratch.mit.edu/projects/62587528/
I just copied and altered the scripts from "Area Calculator". If you want me to add a shape for this, post it in the comments along with the formula.