30960
215 Inches = 17.91595 Feet
215 inches=17.91 feet (or 17 feet 10 inches)
I think you have mis-stated your question. Square feet is an area, feet and inches is a length.
215 inches is 17.9167 feet.
215 inches is 18 (17.9166667) feet.
17.91666... feet in 215 inches.
215 square feet is about 19.97 square meters.
17 feet 11 inches.
Divide 215 by 12=17 feet 11 inches
Answer: 184 assuming no waste... There will be waste and broken tiles. Get an extra case. Math: 13in X 13in = 169 Square inches 169 Square inches / 144 Square inches per square foot = 1.17 square foot per tile 215 square feet / 1.17 square feet = 184 tiles
215 square meters = 2314.2407396 square feet
215