1. Calculate the square footage of a square or rectangular room. Measure the length and width of the room in inches. Multiply the figures to get the area, or square footage, in inches
http://www.ehow.com/how_5197208_calculatesquaref...

1 foot0.3048 meter 1 square foot 0.3048*0.3048square meter.
http://wiki.answers.com/Q/How_calculate_square_fee...

Divide square feet by 9. So, 360/9 = 40 square yards.
http://wiki.answers.com/Q/How_do_you_Calculate_360...
