Assuming 17x17 refers to measurement in inches,
a 17"x17" tile will cover 17/12 x 17/12 sq ft = 2.0069 sq ft
Then covering 427 sq ft will require 427/2.0069 = 212.76 = 213 tiles.
This number assumes there are no breakages, there is no wastage and that every offcut is used.
Chat with our AI personalities
Tiles that are two feet on a side cover 4 square feet. 378 of them cover 1512 square feet.
76.6 tiles
67 tiles.
157 18 by 18 tiles are needed to cover 352 square feet.
You will need at least 67 tiles. This will cover 150.75 square feet.