You need to express those measurements in common units, then use the formula to determine the area of the shape.  First, convert 13 inches to meters.  13 inches equals .3302 meters.  Next, use the formula to calculate the area of the rectangular solid.  Multiply .3302 meters by the 160,000 square meters in order to determine the number of cubic meters.  .3302 meters times 160,000 square meters equals 52,832 cubic meters.