Clarifying the Calculation of Apparent and Actual Depth

[nblu]

https://www.physicsforums.com/archive/index.php/t-77612.html

here's a link to the same question which has already been inquired
before by someone else.

according to the question, it asks to calculate the "actual" depth
and once I have read all the replies on that page, the author seemed to
calculate the answer. I've tried it myself and acquired the same answer.
However, I'm a little confused with the given unit "1.0m" in the question.
Is it just there to confuse the reader? because it has not been included in
any of the calculations.

Sorry for posting too many questions :(
and thank you in advance.

 

[Doc Al]

I'm not quite understanding your concern. All the distances in the problem are given in meters.

 

[nblu]

I'm not quite understanding your concern. All the distances in the problem are given in meters.

oh what I meant was,
was that 1.0m necessary for calculating the final answer?

 

[Doc Al]

Ah... Are you referring to the statement: "She estimates that her eyes are about 1.0m above the water's surface"?

If so, then no, that fact seems irrelevant to the problem.

 

[nblu]

I'm very sorry to hold u up Doc,

I've been trying to figure out a diagram for that question,
would you be able to take a look?
http://img523.imageshack.us/img523/9073/spa0200ol4.th.jpg

Thank you very much and sorry T_T

 

[Doc Al]

Your diagram looks good to me.

 

[nblu]

Your diagram looks good to me.

Thank you doc
I really appreciate your help! :)
have a good weekend

 

[Doc Al]

My pleasure.