The question does not make sense since an acre is an area (two dimensional) measured in square feet or square meters. "Long" refers to a length (one dimensional) which is measured in feet, meters, etc.
Convert both dimensions into feet or meters and multiply them to obtain square feet or square meters
There are approximately 0.3048 meters per foot, or 0.0929 square meters per square foot. A rectangular room 16 by 9 feet has an area of 144 square feet or 0.0929(144) = 14 square meters, to the justified number of significant digits.
-- 7.432 square meters on the floor -- 7.432 square meters on the ceiling -- more square meters on the walls, but in order to calculate them, you need to know the height of the ceiling above the floor
6300 square meters = 67,812.63 square feet
7000 millimetres about 23 feet
16 feet long and 3 feet wide is 4.46 square meters.
16 feet long by 8 feet wide is 11.89 square meters.
10 square meters is 107.64 square feet.
This room has an area of 11.71 (11.705783) square meters.
650.321 square metres.
18 feet is 5.4864 meters (says google, just type "18 feet in meters") 20 feet is 6.09600 meters 5.4864 * 6.09600 = 33.4450944 meters squared (AKA square meters).
The question does not make sense since an acre is an area (two dimensional) measured in square feet or square meters. "Long" refers to a length (one dimensional) which is measured in feet, meters, etc.
Convert both dimensions into feet or meters and multiply them to obtain square feet or square meters
2.972897
If a perfectly square room is 350 square feet, this means that each side is approximately 18. 7 feet long. This is, for a visual comparison, the same as lining up about 18 or 19 2-liter soda bottles end to end, then again in a perpendicular direction.
There are approximately 0.3048 meters per foot, or 0.0929 square meters per square foot. A rectangular room 16 by 9 feet has an area of 144 square feet or 0.0929(144) = 14 square meters, to the justified number of significant digits.