The wall is 37' by 9'11". We know that there are 12 inches in a foot, so let's convert these measurements into inches:
[tex]\sf 37\cdot 12=444~in[/tex]
[tex]\sf 9\cdot 12=108+11=119~in[/tex]
Now let's find the area of the entire wall:
[tex]\sf A=lw[/tex]
[tex]\sf A=(444)(119)[/tex]
[tex]\sf A=52836~in^2[/tex]
Now let's find the area of one brick:
[tex]\sf A = lw[/tex]
[tex]\sf A=(18.5)(8.5)[/tex]
[tex]\sf A = 157.25~in^2[/tex]
Now divide this to the total area of the wall to find out how many bricks it will take to complete the wall:
[tex]\sf 52836\div 157.25=\boxed{\sf 336}[/tex]
So it will take 336 stones to build the wall.
