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27 Oct 2009, 2:02 PM
| #61 (permalink) | |
| Senior Member  HSC: 2009 Gender: Male Location: Planet Earth
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15 Mar 2010, 8:16 PM   | Re: Section I - Multiple Choice You can hide this advertisement by registering. Quote:
 And yeah I'm pretty sure 15 is D. You have to have the square root over the whole number, not just the numerator.
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2 Nov 2009, 11:04 PM
| #63 (permalink) |
| New Member HSC: 2009 Gender: Male
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12 Mar 2010, 12:20 AM | Re: Section I - Multiple Choice Wasn't question 19 actually D. Because the total radius is 12 and the height is 24. Hence, Pie time 12 squared times 24= 10857cm cubed. please share ur solution |
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5 Nov 2009, 9:10 AM
| #64 (permalink) | |
| Junior Member HSC: 2009 Gender: Male
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Yesterday, 6:06 PM | Re: Section I - Multiple Choice Quote:
12 is the "diameter" not the "radius" so the solution was v= pie x 6 (squared) x 24 = 2714cm (cubed)
__________________ 2009 ATAR: 90.25  University of Sydney:___B Education (Secondary: Science)/ B Science 2010-2015 | |
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5 Nov 2009, 12:39 PM
| #65 (permalink) |
| New Member HSC: 2009 Gender: Male
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12 Mar 2010, 12:20 AM | Re: Section I - Multiple Choice Yes ok but there were two spheres each with radius 6. so when you look at the question again, the middle of the cylinder has a radius if 12. not 6 |
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5 Nov 2009, 1:03 PM
| #66 (permalink) | |
| Junior Member HSC: 2009 Gender: Male
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Yesterday, 6:06 PM | Re: Section I - Multiple Choice Quote:
__________________ 2009 ATAR: 90.25 University of Sydney:___B Education (Secondary: Science)/ B Science 2010-2015 | |
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