You multiply the length by the width, i.e. 47ft x 30ft = 1,410 square feet.
As given , NONE!!!! However, if you mean 20ft X 30ft. then the answer is 600 sq.ft. NB note the insertion of units for the first dimension. Note the answer is quoted as 'sq.ft'. ( square feet) NOT feet^(2) , NOT 'ft^(2)'. In future please make sure you quote the units of BOTH dimensions.
5ft x 4 = 20ft
2000 (square feet) = 185.80608 square meters
200 linear feet equals how many square meters
All you need to do is multiply the length by the width, and it doesn't matter in what order you do it. 20ft X30ft= 600 square feet.
You have to multiply the two dimensions to get the area. In this case the answer will be 600 square feet.
400 square feet
30ft*20ft = 600 sq ft
18ft*20ft = 360 square feet
If that is 20ft by 20ft then there are 400 square feet
A 30ft x 14ft room = 420 square feet.
assuming you mean 20ft by 30ft, you just find the area. To find the area, simply multiply both sides, so 20x30 = 600 sq ft
You multiply the length by the width, i.e. 47ft x 30ft = 1,410 square feet.
20ft * 15ft = 300 square feet.
30*2 = 60 square feet
If you are truly looking for SQUARE FEET for a building with these measurements, more informaiton will be needed. A building, whether square or rectangular, will have only two different measurements. My guess is that you are looking for cubic feet, which would include the height of the building. For Example: 30ft x 20ft x 50ft would be 30 ft wide, 20 foot deep (long), and 50 ft tall. Regardless of the placement and the symbolism of the measurements, the result is the same: 30 x 20 x 50 = 30,000 cubic ft.