One Atta Time Flash Cards Distance Learning Create New Sheet Select a Worksheet > Version 1 Version 2 Version 3 Version 4 Version 5 Version 6 Version 7 Version 8 Version 9 Version 10 Grab 'em All Finding Missing Side Length of Rectangle with Fractions Use the area of a rectangle and one side length to find the missing side length.Divide with fractions to solve for an unknown width or height.