Question #ab4ec

1 Answer
Zor Shekhtman
Jul 15, 2016

#10 ft#

Explanation:

Since the angle of incidence equals to the angle of reflection, right triangle formed by mirror and Jerry's body is similar to the right triangle formed by a mirror and basketball poll.

Therefore, the height of Jerry's body (#b=6#) relates to its distance to a mirror (#m_1=3#) as the height of the basketball poll (#h# - unknown) related to to its distance to a mirror (#m_2=5#).

Hence, the following equation:
#6/3 = h/5#,
from which follows:
#h=10#.

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