Question 697137

First we shall convert {{{100ft^2}}} into square inches.

{{{12in=1ft}}} 

So, {{{1ft^2=144in^2}}}

Therefore, {{{100ft^2=14400in^2}}}.

Area of the brick = {{{Length * Width = 4in * 8in = 32in^2}}}

Number of bricks required to cover {{{14400in^2}}} is{{{14400/32 =450}}}.

So, you need {{{450}}} bricks.