question_answer

A square plane mirror 50 cm long is hung parallel to a vertical wall of a room, with its lower edge 50 cm above the ground. A man stands in front of the mirror at a distance 2m away from the mirror. If his eyes are at a height 2m above the ground, the length of the floor, visible to him reflected by the mirror is \[\frac{4}{a}m\], then value of a is.

Answer:

3.00