Question 646894

the area of floor is {{{540ft^2}}} .
each tile is {{{20.5in}}} by {{{20.5in}}}; so, find the area of a tile

{{{20.5in*20.5in=420.25in^2}}} ....now convert {{{in^2}}} into {{{ft^2}}}


There are {{{144in^2}}} to a {{{ft^2}}} because {{{1 ft=12in}}}

{{{(420.25/144)ft^2=2.918ft^2}}}

now, divide the area of a floor with area of a tile to get a number of tiles needed

 {{{540ft^2/2.918ft^2=185.05825908156271418779986291981=185}}}