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October 02, 2025, 02:02:18 pm
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Author Topic: Further Exam 2 - How did everyone go?  (Read 73562 times)  Share 

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turtlekent

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Re: Further Exam 2 - How did everyone go?
« Reply #15 on: November 04, 2013, 11:32:27 am »
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why is 1.728 for discus question wrong?
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abcdqdxD

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Re: Further Exam 2 - How did everyone go?
« Reply #16 on: November 04, 2013, 11:32:41 am »
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The thickness of the discus doesn't increase
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itsalmostover

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Re: Further Exam 2 - How did everyone go?
« Reply #17 on: November 04, 2013, 11:33:32 am »
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Quote from: lencake on November 04, 2013, 11:30:21 am
it was cube root 720/500 right

What i did was 720 : 500 = 36 : 25

square root that to give 6 : 5

and then cube that giving 216 : 125

therfore you multiply the smaller discus by 216/125 to get the volume of the larger discus?

Did anyone else get this? :)
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BLACKCATT

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Re: Further Exam 2 - How did everyone go?
« Reply #18 on: November 04, 2013, 11:33:40 am »
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oh god
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turtlekent

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Re: Further Exam 2 - How did everyone go?
« Reply #19 on: November 04, 2013, 11:34:29 am »
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it said they were "similar". didnt say anything about having a constant thickness. Doesn't "similar" imply varying thickness?
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abcdqdxD

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Re: Further Exam 2 - How did everyone go?
« Reply #20 on: November 04, 2013, 11:34:50 am »
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Meant to be squared not cubed (there was a VERY similar trick question in the past VCAA exams where only 1% of the state got it right)
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Evan.T

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Re: Further Exam 2 - How did everyone go?
« Reply #21 on: November 04, 2013, 11:35:12 am »
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Quote from: itsalmostover on November 04, 2013, 11:33:32 am
What i did was 720 : 500 = 36 : 25

square root that to give 6 : 5

and then cube that giving 216 : 125

therfore you multiply the smaller discus by 216/125 to get the volume of the larger discus?

Did anyone else get this? :)

That's what I did :D Although now I don't know if I got it :\
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mattdwyer

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Re: Further Exam 2 - How did everyone go?
« Reply #22 on: November 04, 2013, 11:35:36 am »
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What was the slope of the three median line?
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Evan.T

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Re: Further Exam 2 - How did everyone go?
« Reply #23 on: November 04, 2013, 11:36:09 am »
+1
Quote from: mattdwyer on November 04, 2013, 11:35:36 am
What was the slope of the three median line?

From memory I got 0.8? So if I am correct, you'll be okay with a few above and below.
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itsalmostover

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Re: Further Exam 2 - How did everyone go?
« Reply #24 on: November 04, 2013, 11:36:47 am »
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If someone knows what the discus question was exactly, could you remind me? I'm getting worried and i can't recall it properly anymore xD
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abcdqdxD

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Re: Further Exam 2 - How did everyone go?
« Reply #25 on: November 04, 2013, 11:36:57 am »
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yes i got 0.8 too! :D
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Cloud.Nine

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Re: Further Exam 2 - How did everyone go?
« Reply #26 on: November 04, 2013, 11:37:25 am »
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Quote from: itsalmostover on November 04, 2013, 11:33:32 am
What i did was 720 : 500 = 36 : 25

square root that to give 6 : 5

and then cube that giving 216 : 125

therfore you multiply the smaller discus by 216/125 to get the volume of the larger discus?

Did anyone else get this? :)
Yes, I got times by 1.72. Squared then cubed
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souka

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Re: Further Exam 2 - How did everyone go?
« Reply #27 on: November 04, 2013, 11:37:33 am »
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i got 0.9
dunno some people got 0.8 it depended on how you drew your line
hopefully vcaa markers mark that question on the line we drew
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Ksta07

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Re: Further Exam 2 - How did everyone go?
« Reply #28 on: November 04, 2013, 11:37:53 am »
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Didn't had enough time to finish it off...went guessing few questions..:s
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abcdqdxD

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Re: Further Exam 2 - How did everyone go?
« Reply #29 on: November 04, 2013, 11:38:01 am »
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Quote from: turtlekent on November 04, 2013, 11:34:29 am
it said they were "similar". didnt say anything about having a constant thickness. Doesn't "similar" imply varying thickness?

I know the diagram is not to scale, but it is further suggested since the discuss was MUCH larger but the thickness was EXACTLY the same
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