If those are four sides of a quadrilateral, you would also need some additional information, for example some angle, or a diagonal. If you have a diagonal, you can separate your quadrilateral into two triangles, and use Heron's formula.
15 by 25 by 16 by 20 is a measurement in 4-dimensional hyperspace. So it would be a hyper volume, measured in quartic metres - that is, metres4
Iceland's land area covers 100,250,000,000 square meters.
There are 36,400 square meters in nine acres of land.
About 615.5 square meters.
64 x 64 = 4096 sq. metres.
10x10=100. So there are 100 square meters in a 10x10 meter plot of land.
10,000 square meters
Five acres equates to about 20,234.3 square meters.
Turkey is ranked 37th in size at 783,562 km2
619,745,000,000 square meters.
The answer would be 210 square meters.
55' by 50' is 23.225 square meters.
1 acre = 4,046.85642 sq meters