There are two steps to take to answering this question: converting imperial to metric and calculating the surface area. These steps can be taken in any order. You also have to know how many meters are in a foot. (0.3048)
Converting the 10 feet and 14 feet to meters is done by multiplying by 0.3048 resulting in 3.048 meters and 4.2672 meters.
You can then multiply these to get an area of 13.0064256 square meters.
You can also multiply 10 feet by 14 feet to get an area of 140 square feet, which you then need to multiply by the square of 0.3048 (0.09290304) to get 13.0064256 square meters again.
You need to square your meters/feet ratio in that last step because you are now converting square feet to square meters meters.
Answer: 75 square feet = 6.96772 square meters.
7.8 square meters.
7.153534058253256446382575314808 square meters.
6.7 square meters.
2.23 square meters.
14.5 square meters.
188.13 square meters.
10.6 square meters.
11.15 square meters.
18.11 square meters.
130 (square feet) = 12.0774 square meters.
48 (square feet) = 4.46 square meters.