geometry question in file please help

Question

anonymous · Answer

attachment

sleepyjess · Answer

Welcome to OpenStudy! First off, one question, why does it say Lesson 4: Semester Test at the top?

anonymous · Answer

its a study guide for the test

sleepyjess · Answer

Mmmm ok, let me figure out how to do this first?

anonymous · Answer

ok

sleepyjess · Answer

|dw:1420782366305:dw|

sleepyjess · Answer

Does that make sense?

anonymous · Answer

yes! but how am I supposed to prove it

anonymous · Answer

that came out sounding rude srry about that

sleepyjess · Answer

Ok, now, we know that for every 1.5 meters tall, there is 8 meters of shadow. We can use this information to find the height of the flagpole and building. The shadow is $\sf 5.\overline{333}*h$.

sleepyjess · Answer

Now, we can transfer that to $\sf\dfrac{s}{5.\overline{333}}=h$.

anonymous · Answer

so now we

sleepyjess · Answer

Now, we take the shadow length of the flagpole and substitute it for s.

sleepyjess · Answer

Lets see if @Kainui can confirm my thoughts on this problem?

anonymous · Answer

alright

sleepyjess · Answer

or possibly @nincompoop

sleepyjess · Answer

@Jhannybean

anonymous · Answer

well thanks for taking time to help !!! appreciate it

sleepyjess · Answer

No problem! Do you get how to do it now?

jhannybean · Answer

Try similar triangles.

jhannybean · Answer

Are you stuck on part a) or part b)?

sleepyjess · Answer

Does the method I used also work?

jhannybean · Answer

|dw:1420783950369:dw|

jhannybean · Answer

I'm not really sure where the 5.33 came from @sleepyjess

sleepyjess · Answer

I did 8/1.5

jhannybean · Answer

okay, then that would be $$\frac{8}{1.5} = \frac{8+32}{x}$$ right? that's what you did?

sleepyjess · Answer

Basically, yes

sleepyjess · Answer

So then, cross multiply, $\sf\dfrac{60}{8x}$

sleepyjess · Answer

8x=60
x=7.5

sleepyjess · Answer

And the same method for the building.