Please read the following table in Markdown format and then answer the question according to the table. Table cells in one row are seperated by '|', and different rows are seperated by '
'.

Table:
| City district | Area km² | Population 2007 census(hab) | Housing (2007) | Density (hab/km²) | Elevation msl |
| --- | --- | --- | --- | --- | --- |
| Cuzco | 116.22km² | 108,798* | 28,476 | 936.1 | 3,399 msl |
| San Jerónimo | 103.34km² | 28,856* | 8,942 | 279.2 | 3,244 msl |
| San Sebastián | 89.44km² | 85,472* | 18,109 | 955.6 | 3,244 msl |
| Santiago | 69.72km² | 66,277* | 21,168 | 950.6 | 3,400 msl |
| Wanchaq | 6.38km² | 54,524* | 14,690 | 8,546.1 | 3,366 msl |
| Total | 385.1km² | 358,052* | 91,385 | 929.76 | — |
| * Census data conducted by INEI | * Census data conducted by INEI | * Census data conducted by INEI | * Census data conducted by INEI | * Census data conducted by INEI | * Census data conducted by INEI |
Question:
What is the area of the city with a density of 8,546.1?
Answer:
6.38km²