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VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE General & Further Mathematics => Topic started by: spikey on November 03, 2011, 05:15:07 pm

Title: VCAA 2007 Geometry
Post by: spikey on November 03, 2011, 05:15:07 pm

Can anyone help me out with Question 7 on the vcaa 2007 exam 1 paper in geometry?
The answer I keep getting doesnt seem to be any of the choices

is it meant to be:
Total surface area of cylinder - hemisphere TSA - area of the circle on the lid?

Here is a link
http://www.vcaa.vic.edu.au/vce/studies/mathematics/further/pastexams/2007/2007furmath1.pdf

Title: Re: VCAA 2007 Geometry
Post by: davidle_10 on November 03, 2011, 05:55:38 pm

I think you're referring to q6 as q7 is about a rod within a cube. For q6 you are basically meant to calculate the TSA of the REMAINING section of the cylinder after removing the hemisphere. So the answer I believe would be TSA=SA of half a sphere + SA of cylinder - A of circle

Title: Re: VCAA 2007 Geometry
Post by: spikey on November 03, 2011, 06:05:30 pm

Ah yes question 6 sorry. Oh get it now thanks! I was subtracting all of them before