Q. A disc of radius R rolls on a rough horizontal surface. The dis†an ce covered by the point A in one revolution is 2ππ R 2R 8R ππ R
![3M (49909) Gold Paper Disc Roll 216U, 5 in x NH P80 A-weight, 125 discs per roll 10 rolls per case [You are purchasing the Min order quantity which is 1 ROLL] : 3M (49909) Gold Paper Disc Roll 216U, 5 in x NH P80 A-weight, 125 discs per roll 10 rolls per case [You are purchasing the Min order quantity which is 1 ROLL] :](https://m.media-amazon.com/images/I/41llaDgVN7L._AC_UF894,1000_QL80_.jpg)
3M (49909) Gold Paper Disc Roll 216U, 5 in x NH P80 A-weight, 125 discs per roll 10 rolls per case [You are purchasing the Min order quantity which is 1 ROLL] :
![ABN 80 Grit Sandpaper Roll - 6 Inch Round Sanding Discs Aluminum Oxide Sandpaper Discs with Adhesive Back, 100Pc - - Amazon.com ABN 80 Grit Sandpaper Roll - 6 Inch Round Sanding Discs Aluminum Oxide Sandpaper Discs with Adhesive Back, 100Pc - - Amazon.com](https://m.media-amazon.com/images/I/91YifqvG0AL.jpg)