



 
Hi Les, I would start by converting the measurements to yards. For example the sidewalk is 4 feet wide and there are 3 feet in a yard so the sidewalk is 4/3 yards wide. The volume of this rectangular slab of concrete is given by length × width × thickness. Let the length be L yards then
Solve for L. You may want to convert L to feet at this point. Penny  


Math Central is supported by the University of Regina and The Pacific Institute for the Mathematical Sciences. 