Posted by Kristi Schultz on Thursday, July 7, 2011 at 12:32pm.
I need to fill a 25ft by 25 ft circle with 1 inch of sand. How much sand will i need?

math  PsyDAG, Friday, July 8, 2011 at 7:24pm
If the circle really is 25' by 25', that means that the diameter = 25' and r = d/2.
Area of circle = pi (r^2)
Multiply area by depth, making sure to convert to same units.