None. You need a second dimension to calculate square meters.
1 acre = 4,046.85642 sq meters
64 x 64 = 4096 sq. metres.
6464
√4,096 = 64
Yes, of 64.
144 square meters
4096 cm
Approximately 19.51 square meters.
11 meters square are 121 square meters.
Negative 64 is the square root of an integer. The square root of -64 is not an integer.
885 square feet is 82.2191904 square meters.
About 32.5 square meters. (32.516064 square meters)