mmuehlba Posted January 21, 2014 Report Share Posted January 21, 2014 Hi, Can you tell me the "square footage" dimension of how many marbles there are if they are on a mat one marble deep? I'm thinking of using them for an art project for my son's room. Thanks! Joni Beigh p.s. I need a total of about 6 square feet. http://www.ebay.com/itm/LOT-8-420-marbles-all-with-damage-all-vintage-/111259357035?ssPageName=ADME:X:AAQ:US:1123 this is easy as just figure that every marble is .625 and there is 20 marbles by 21 marbles so with no space between each marble it would be 12.5 inches by 13.125 inches and that is 164.0625 square inches or 164.0625in² = 1.1393ft² so it is only 1.1393 square feet so you would have to buy a few more and I have a lot more chipped marbles if you need more . the board is 16inches by 16 inches and the holes that hold the marbles are 3/4 on center . hope this helps . View Pics and Bid . Mike Link to comment Share on other sites More sharing options...
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