Considering the area of the rectangular bathroom, it is found that he needs 240 tiles for the bathroom.
The area of a rectangle of length l and width w is given by:
A = lw.
In this problem, we have that l = 10 ft, w = 6 ft, hence the area in ft² is given by:
A = 10 x 6 = 60 ft².
He needs 4 tiles for each ft², hence the amount of tiles is given by:
n = 4 x 60 = 240 tiles.
More can be learned about the area of a rectangle at https://brainly.com/question/10489198
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