Hi there!
Dimensions of rectangular room :-
• Length = 109 inches
• Breadth = 103 inches
Dimensions of square tiles :-
• Each side = 3 inches
It's known :-
No. of tiles = Area of rectangular room / Area of tile
No. of tiles = [tex]\dfrac {109 × 103}{3}[/tex]
No. of tiles = [tex]\dfrac {11227}{9}[/tex]
No. of tiles = 1,247
Hence,
Th' number of tiles required for the job is 1,247
~ Hope it helps!