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NationalTutoringObservatory
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MathEd-PII

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8
volunteer
OK
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volunteer
So why don't you just write down
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volunteer
the what under B, why don't you go ahead and write down what you just said. Volume equals
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volunteer
the formula
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student
like here
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volunteer
right, right under B there.
8,595
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volunteer
first line under B
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volunteer
where it says 4 points
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student
Here.
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volunteer
You, you just told me what the bit volume of
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volunteer
the cylinder is. So write that down as your first step.
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volunteer
Beautiful.
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volunteer
Oh.
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volunteer
but what did they tell you the volume was?
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student
They said the volume 100 cubic units.
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volunteer
Right.
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volunteer
So
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student
So do you just write it down on the formula?
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volunteer
just say another equal sign.
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volunteer
after the pyR 28 and put it right there.
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volunteer
It's always gonna be 12 pie, so.
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volunteer
right.
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student
Yeah, cause it's constant.
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volunteer
All right, now you can go ahead and
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volunteer
solve for
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volunteer
sulfur H
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volunteer
right?
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student
We, we can't solve for age, but like the problem is we, we're trying to find the DADT and on our formula right now we don't have anything a related.
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volunteer
OK, but if we're just following the, the problems instructions.
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volunteer
which
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volunteer
you know
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volunteer
that, that, this is saying, asking you to find a formula that relates height with radius.
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volunteer
So don't you think
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volunteer
if you saw for H here that you would be doing what they're asking you to do. It's worth 4 points, right?
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volunteer
So
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student
Yeah. So that, that means for B we're already good then
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student
so we're on C
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volunteer
well you haven't finished it quite because you haven't solved for H. It says find a formula that relates height with the radius. So you've got it down there, sulfurH and you'll be done with that section, with that.
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student
OK
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volunteer
part.
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volunteer
So
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volunteer
yeah
8,595
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volunteer
Mhm
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student
So, but I don't think we plugged the R yet, right? So do we just keep it this way?
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volunteer
keep it this way because they're asking, so cancel the pies because they wanted a numerator, one of the denominator, right?
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student
Mhm. So.
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volunteer
And just, you, now you can write H equals 12 overr squared and you're done with Part B.
8,595
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volunteer
So, you know, when you get these kind of problems, you're trying to follow what they're asking you.
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student
OK
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volunteer
I
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volunteer
you, you did that one and so
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volunteer
all right.
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volunteer
let's see what she says.
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student
OK, so, first of all, A equals the area of a cylinder is
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student
um
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volunteer
OK, so
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student
I don't know.
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volunteer
yeah, this is a little
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volunteer
OK
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student
I think we need to find out every about cylinder like the formula for that.
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volunteer
Find the one that relates A and H, which does not involve d
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volunteer
Um.
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volunteer
if you think about it
8,595
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volunteer
again, kind of going back to the
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volunteer
the idea of a
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volunteer
it's a, it's a cheese and you're slicing it horizontally.
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student
OK
8,595
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volunteer
If you think about it
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volunteer
V equals piR2 H like we said, but it also
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volunteer
V equals AH
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volunteer
right?
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volunteer
It's the same thing
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student
Oh, OK
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volunteer
because if, if you think about what that formula is saying V equals prior or squad H, it's saying it's the area of the circle
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volunteer
times H
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volunteer
So
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volunteer
really this is kind of
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volunteer
it, it just asking you to say, I, I don't
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volunteer
I put words in your mouth. So what would you write down for this one?
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student
Oh, then you will write down
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student
that's what you said because.
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student
A H.
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volunteer
Yeah, it's, it's really
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volunteer
it's really the same thing as the previous one, but you're not putting the pi R squared in there, right?
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student
Mhm
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student
Yeah.
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volunteer
So we're just kind of following, we're, we're kind of playing dumb here and
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volunteer
um
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student
So does that mean then HE +
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volunteer
right
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student
I mean, A equals V over H.
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volunteer
Exactly. So we're, we're not really sure if, if we're just playing along with, with their
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volunteer
idea here
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volunteer
We're just answering their questions, and they're giving you credit for each one that you do, so.
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student
Yeah
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volunteer
I think so far you're right on track, right?
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student
OK, I'll, I'll put the next um part.
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volunteer
OK.
8,595
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volunteer
So I think we've done, we've done fine
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student
OK, I uploaded it, but it's like a little bit like below.
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