a 16 by 18 foot rectangular section will be covered by square tiles that measured 2 feet on each side if the tiles are not cut how many of them will be needed to cover the section of the wall

Answer 1

No. of tiles on each side=16/2 and 18/2 i.e. 8 and 9.
Total tiles reqd==8*9=72.
Or else,
Area to be covered=16*18=288sqft
Area of each tile=2*2=4sqft,
hence no. of tiles=288/4=72.