The image formed by an objective of a telescope is-

A height of a tower formed by a objective lens of a telescope is 4.7 cm. What is the height of the final image of the tower if it is formed at 25 cm ?

The image formed by the telescope in normal adjustment position is at

If this telescope is used to view a 100 m tall tower 3 km away, what is the height of the image of the tower formed by the objective lens ?