How do you find the square footage of a square?

Rectangle is length times width and triangles are base times height divided by 2.

For a rough estimate, you could multiple the outside dimensions Length times Width and get total sq. ft of the home. Example: A ranch style home 50' X 30' would have 1500 sq. ft. If you wanted a more...

Width X length..typical deck goes out from house 10 feet, and a width of 12 feet that totals 120 sq.ft.

Sq ft- length X width Area- length x width x height

mutiply the langh by the widge example= say your room is 15ft wide x 20 ft long 15x20=300 your sq footage is 300 sq ft now to do it in inchs- example= say you have 277 "x 472" 277x472=130744sq...