If my glass cost 220 per square foot how much does it cost in square meter?

Answer 1

When doing problems like this, keep track of the units if you want to get the right answer.

1 sq ft ≈ 0.0929 sq m, so the conversion factor is 1 sq ft/0.0929 sq m

The starting point is $220 / sq ft). The suggestion above to multiply by 0.0929 means that your units will be $ • sq m/sq ft2 . That obviously doesn't make any sense.

Rather, you multiple $220 / sq ft by 1 sq ft / 0.0929 sq m. The sq ft units cancel out, so you're left with $220 / 0.0929 sq m - or $2368 per square meter.

And that makes sense. A square meter is just over 10 times the size of a square foot, so if it costs $220 /sq ft, then it should be over 10 times as much for a square meter.

(Note: I've used dollars, but the person who posted this didn't specify currency. Use whatever currency you're dealing with - the results will be the same).