37.161216 m²
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
20 x 20 = 400 (square meters).
25
400
400 square feet = 37.16 square meters.
http://www.dict.cc/400 square meters is approximately equal to 0.0988421526 acres.
You don't convert square meters to meters. Those are two very different things.
400 square meters are 4.3 thousand square feet.
400 square metres
If that is 20ft by 20ft then there are 400 square feet