A metre is a unit of length. A square metre is a unit of area. The two units are therefore incompatible.
A linear meter is exactly the same as a meter. So, 3000 linear meters = 3000 meters. "Linear" is just an unnecessary adjective to be used only if there is some doubt whether you are refering to a length (meter, m), area (square meter, m2) or volume (cubic meter, m3).
404686 m2
10,000 square meters (m2) = 1 hectare (ha) 1,809 m2 = 0.1809 ha
1113 m2 = 0.275 acres1 acre = 4046.9 m2
1 ha = 10000 m2 ⇒ 1.56 ha = 1.56 x 10000 m2 = 15600 m2
1 are = 100 m2 → 34.5 ares = 34.5 x 100 m2 = 3450 m2
4m * 3.2m = 12.8 m2
46,000 m2
16258.02 m2
4.18 square meters.
13.94 square meters.
214.885 m2