Two children are trying to cross a stream. they want to use a log that goes from one bank to the other. if the left bank is 5 feet higher than the right bank and the stream is 12 feet wide, how long must a log be to just barely reach?

the correct option is 2.

step-by-step explanation:

according to the given information triangle abc is a right angle triangle with right angle at a. segment ab is 5 and segment ac is 7. point d is on segment bc and angles adb and adc are right angles.

it is given that triangles abd, cad, and cba are similar.

two triangles are similar if their corresponding sides are proportional.

in triangle cba, using pythagoras theorem

                      )

triangle abd and cba are similar,

                            (2)

triangle cad and cba are similar,

                      )

using (1), (2) and (3), we get

hence proved.

therefore option 2 is correct.

it's d

step-by-step explanation:

what is the rest of the question? ?