SOLUTION: A kitchen floor measures 12 feet 8 inches wide by 18 feet 9 inches long. The floor is being covered with tiles that are 8 inch squares. How many tiles must be bought to cover the f

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Question 176606: A kitchen floor measures 12 feet 8 inches wide by 18 feet 9 inches long. The floor is being covered with tiles that are 8 inch squares. How many tiles must be bought to cover the floor?
Please show how you got the answer.
Thanks!
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Convert all of the measurements to inches.
12'8"=12x12+8=144+8=152 inches
19'9"=18x12+9=216+9=225 inches
The total kitchen area is the product of the width and length
A%5Bk%5D=152%2A225=34200
Each tile has an area of
A%5Bt%5D=8%2A8=64
The total number of tiles would be the kitchen area divided by tile area.
N=A%5Bk%5D%2FA%5Bt%5D=34200%2F64=534.375
You would round up to 535 tiles.
Practically, you would typically get 10% more for mismeasurement, cutting mistakes, and future replacement.