This question regards area. Area is length times x width. The only problem is that both numbers are not in the same units.
16 x 3 = 48 square feet
A meter is roughly 3 feet but we'll use a closer number which is 3.28 feet.
Now 3.28 x 3.28 is, 10.76 which is how many feet are in a square meter.
Now divide 48 by 10.76=4.46 square meters.
If we would have left a meter at 3 feet the answer would be
3 x 3=9
48 divided by 9 is 5.33