Question 1063770
Volume of the cylinder  = {{{ pi*r^2*h}}}
                       = {{{ pi*9^2*12}}}
                        = 3053.628 cubic feet
3 pounds of sand fit into 1 cubic foot
hence no. of pounds of sand fill the cylinder  =  {{{ 3053.628/3}}}
                                     = 1017.876 pounds