When they say "determine the area of the orthophoto map on the topographical map," they are asking you to calculate the total area covered by the orthophoto map within the boundaries of the topographical map.
Here is a worked example:
Let's say we have a topographical map that covers an area of 10 square kilometers. Within that topographical map, there is an orthophoto map that covers 2 square kilometers.
To determine the area of the orthophoto map on the topographical map, simply subtract the area of the topographical map from the area covered by the orthophoto map:
Area of orthophoto map = Area of topographical map - Area outside of orthophoto map
= 10 square kilometers - 2 square kilometers
= 8 square kilometers
Therefore, the area of the orthophoto map on the topographical map is 8 square kilometers.
What do they mean when they say
Determine the area of the orthophoto map on the topographical map
Give a worked example
1 answer