A vertical photograph was taken over the lunar surface from an altitude of 70 km with a 80 mm focal length camera.

Please help me solve these problems:

1.     A vertical photograph was taken over the lunar surface from an altitude of 70 km with a 80 mm focal length camera. What is the actual diameter of a crater whose diameter on the photograph scales 9 mm

2.     Assume that the smallest discernible and measureable relief displacement that is possible on a vertical photo is 0.8 mm. Would it be possible to determine the height of a telephone utility box imaged in the corner of a 20 cm square photo taken from 870 m above ground? (Note: Telephone utility boxes actually stand 1.7 m above the ground)

3.      A pair of overlapping vertical photos is taken from a flying height of 981 m above ground with a 152 mm focal length camera. The x coordinates on the left photo of the base and top of a certain tree are 76 mm and 82 mm, respectively are -13 mm and -16 mm, respectively. Determine the height of the tree.