I'm thinking about making a mosaic and wondering how many square inches a gross (144) of tiny tiles will cover. The tiles are square and measure 4.8 mm. When I tried to do the math, I kept getting a different answer every time. Guess I'm getting bogged down in the conversions from square millimeters to square inches. Can anyone figure this out for me?
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If you have 144 tiles, it will be a 12x12 matrix of tiles (assuming you want it square, the surface area will be the same either way)
if each side is 12 tiles long, that is 4.8 * 12 = 57.6 mm
57.6 * 57.6 = 3317.76 square millimeters, now to convert it.
This is the same as 33.17 square centimeters.
conversion from cm squares to inches square is 0.155
33.17 * 0.155 = 5.14 square inches
130 square inches is wayyyyy off. That is more than 10x10 feet!
if each side is 12 tiles long, that is 4.8 * 12 = 57.6 mm
57.6 * 57.6 = 3317.76 square millimeters, now to convert it.
This is the same as 33.17 square centimeters.
conversion from cm squares to inches square is 0.155
33.17 * 0.155 = 5.14 square inches
130 square inches is wayyyyy off. That is more than 10x10 feet!
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First calculate the area it will cover in mm.
4.8x4.8=23.04mm squared per tile. So with 144 tiles the area covered will be 144x23.04=3317.76mm
Now convert that from mm to inches = 130.62 (to 2 decimal places) or 130.617195356 (to 9 decimal places). Did 9 decimal places for you so you can figure it out to whatever you need it to be s.f. or d.p wise.
4.8x4.8=23.04mm squared per tile. So with 144 tiles the area covered will be 144x23.04=3317.76mm
Now convert that from mm to inches = 130.62 (to 2 decimal places) or 130.617195356 (to 9 decimal places). Did 9 decimal places for you so you can figure it out to whatever you need it to be s.f. or d.p wise.
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4.8 mm x 4.8 mm x 144 tiles x 1 in/25.4mm x 1 in /25.4 mm= = 5.12 in ^2