-- The area of the kitchen floor is (11.5 ft) x (9.5 ft) = 109.25 square ft.
-- The area of each tile is (0.5) x (0.5) = 0.25 square ft.
-- If the tiles are carefully placed, with no overlap and no big sloppy spaces
between them, the number of tiles required to cover the floor is
(109.25 ft²) / (0.25 ft²/tile) = 437 tiles .
