Mr. Trundle used exactly 128 ceramic tiles to cover the floor of a shower. If each tile is a square with 6-inch sides, what is the area of the shower floor?

768sq ft
1536 sq ft
3072 sq ft
4608 sq ft

Question

Mr. Trundle used exactly 128 ceramic tiles to cover the floor of a shower. If each tile is a square with 6-inch sides, what is the area of the shower floor?

768sq ft
1536 sq ft
3072 sq ft 
4608 sq ft

anonymous · Answer

The area of a square is the product of two of its sides. Since these square tiles have 6-inch sides, each tile has an area of 36 sq inches. Since there are 128 tiles, we have 128 x 36, which is 4608 sq inches, and since there are 12 inches in a foot, we divide this number by 12 and get an answer of 384 sq ft.

anonymous · Answer

Actually, 384 sq ft is not a choice. Sorry for not noticing this at first. 4608 is a choice, so I believe this is the correct answer, but I think the units on it are sq inches.