A square area (on the surface of the earth) with side 100 m and uniform height, appears as 1 cm2 on a vertical aerial photograph. The topographic map shows that a contour of 650 m passes through the area. If focal length of camera lens is 150 mm, the height from which the aerial photograph was taken is

A square area (on the surface of the earth) with side 100 m and unifor

1.	A square area (on the surface of the earth) with side 100 m and uniform height, appears as 1 cm2 on a vertical aerial photograph. The topographic map shows that a contour of 650 m passes through the area. If focal length of camera lens is 150 mm, the height from which the aerial photograph was taken is
A.	800 m
B.	1500 m
C.	2150 m
D.	3150 m
Answer» D. 3150 m

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