When they say "Determine the area of the orthophoto map on the topographical map", they are asking you to calculate the total area represented by the orthophoto map as depicted on the topographical map. This would involve measuring the dimensions of the orthophoto map on the topographical map and calculating the area based on these dimensions. The area calculation could be done using mathematical formulas, such as multiplying the length and width of the map or using any other appropriate method depending on the specific shape of the orthophoto map.
