Examples
1) The scale of an aerial photograph is 1 cm = 100 m. The photograph size is 20cm x 20cm. Determine the number of photographs required to cover an area of 100 sq. km if the longitudinal lap is 60% and the side lap is 30%.
Solution.
Here l = 20 cm ; w = 20 cm ; P1 = 0.60 ; Pw = 0.30