9.030175488 square metres (m2)
12 square meters
23.41 square meters.
12' by 14' is 168 square feet or 15.61(15.6077107) square meters.
4 meters x 3 meters = 12 square meters.
12
144 square meters
About 13.4 square meters. (13.3780378 square meters)
13.38 square meters.
78 x 12 = 936 square meters.
12
12 square meters
23.41 square meters.
13.39 square meters.
20.07 square meters.
12' by 14' is 168 square feet or 15.61(15.6077107) square meters.
4 meters x 3 meters = 12 square meters.
To work out square meters you need two dimension not just one length.