My simple Radius Calculator tells you the radius of an arc if you know the width and height. You can use a string the length of the radius to draw any size arc on a piece of wood, or a piece of paper, or fabric, or a garden in a lawn, or tons of other uses! The calculator can be found at http://handydad.tv/radius-calculator Background music "Daily Beetle" by Kevin MacLeod is licensed under a Creative Commons Attribution license (https://creativecommons.org/licenses/by/4.0/) Source: http://incompetech.com/music/royalty-free/index.html?isrc=USUAN1500025 Artist: http://incompetech.com/ ~-~~-~~~-~~-~ You need to see this: "Ultimate Desk Setup" https://www.youtube.com/watch?v=fFicEWko8y0 ~-~~-~~~-~~-~