The wall is square shaped.
The dimension of wall is 5 feet by 5 feet.
1 feet =12 inches
5 feet = 12*5 =60 inches
Area of square is given by:
Area = side * side
Area of square wall = 60*60 =3600 square feet.
Dimension of tile is 4 5/8 in. by 4 5/8 in.
converting 4 5/8 into improper fraction (8*4+5)/8 equals 37/8
Area of one tile = (37/8)*(37/8) = 1369/64
Number of tiles required can be found by dividing area of wall by area of one tile.
Number of tiles = 3600 divided by (1369/64)= 168.298 = 168
So number of tiles required will be 168.