Question 1131160
A wall is {{{17ft}}} in height and {{{11ft}}} in length.

{{{(1/2)in}}} mortar is used: .

Brick dimensions are 
 {{{2}}}{{{ 3/4}}}{{{ in}}} high, =>{{{(11/4)in}}}
{{{4}}}{{{ 1/4}}}{{{ in}}} wide, =>{{{(17/4)in}}}
{{{8}}}{{{ 1/2}}}{{{ in}}} long=>{{{(17/4)in}}}
(Nominal dimensions are {{{2}}}{{{ 1/4}}}, {{{3}}}{{{ 3/4}}}, and {{{8}}}.) =>{{{(1/2)in}}} mortar is already added and we got dimensions above


{{{17 * 11 = 187ft^2}}} (wall area)

brick area: we need only length and height

{{{(17/4 )* (11/4 ) = (187/16)ft^2}}} (brick area)


divide the wall area by brick area 

{{{ 187ft^2/(187/16)ft^2=187/(187/16)=(187*16)/187=16}}}=> the number of bricks needed