one square foot is equal to 0.0929 square meters, multiply this by 400 and the answer is 37.16 square meters
1 foot = 0.3048 meter 400 sq feet = 400 x 0.3048 x 0.3048 sq meters
1 foot = 0.3048 meter 400 sq feet = 400 x 0.3048 x 0.3048 sq meters
25
20 x 20 = 400 (square meters).
400
400 square feet = 37.16 square meters.
http://www.dict.cc/400 square meters is approximately equal to 0.0988421526 acres.
400 square meters are 4.3 thousand square feet.
400 square metres