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The number of photographs required to cover an area of 30 km × 25 km if the scale of an aerial photograph is 1 in 15000 is?
Longitudinal overlap = 58%
side overlap = 29%
Format of photograph taken = 24 cm × 24 cm
  • a)
    300
  • b)
    225
  • c)
    32
  • d)
    100
Correct answer is option 'B'. Can you explain this answer?
Verified Answer
The number of photographs required to cover an area of 30 km × 2...
Concept:          
No. of photograph in the direction of flight (N1)
No. of photographs perpendicular to the direction of flight (N2)
Where,
Pl = overlap in the direction of flight
Pw = overlap in the direction perpendicular to the direction of fligh
tl = length of photograph in the direction of flight
w = width of photograph normal to direction of flight
L1 = Length of ground to be covered
W1 = Width of ground to be covered
S = Scale of the photograph
Total number of photograph required: = N1 × N2
Calculation:
L1 = 30000 m
W1 = 25000 m
Pl = 58%
Ps = 29%
l = 24 cm

N1 = 20.84

N2 = 10.78
Total no. of Photographs = N1 × N2
N = 20.84 × 10.78
N = 224.65 ≅ 225
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Most Upvoted Answer
The number of photographs required to cover an area of 30 km × 2...
It is not possible to determine the number of photographs required to cover an area of 30 km without additional information. The number of photographs needed would depend on factors such as the size and resolution of each photograph, the altitude and angle from which they are taken, and the level of detail required for the coverage.
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