5 x 10 = 50 square feet
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Well, darling, to find the square footage of a rectangle, you simply multiply the length by the width. So, for a 12-foot long by 7-foot wide space, you'd have 84 square feet to strut your stuff in. Just remember, size isn't everything, it's how you use it!
There is no way to answer your question . . . length (long) is not measured in square feet. Example: The length of the Area could be 1 foot by 34.23 feet. Or it could be 11.41 feet by 3 feet. Or it could be 6.85 feet by 5 feet. It could also be 5.85 feet by 5.85 feet. It could be an infinite number of different lengths similar to the examples.
To find the square footage of a rectangular room, you simply multiply the length by the width. In this case, the room is 15 feet long and 18 feet wide, so the square footage would be 15 x 18 = 270 square feet.
352 square feet.
Divide the square footage by the width in feet. Example: 20 sq. ft roll of material is made up of 10 linear feet by 2 feet in width. 20 square feet divided by 2 feet wide equals 10 linear feet and 2 feet wide. For linear feet ask yourself how long is it. 100 sq. ft. 1 foot wide would be 100 linear feet long.