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VCE Stuff => VCE Mathematics => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE General & Further Mathematics => Topic started by: Studyinghard on October 31, 2010, 04:18:08 pm

Title: 2009 exam question 5
Post by: Studyinghard on October 31, 2010, 04:18:08 pm

can someone explain?

Title: Re: 2009 exam question 5
Post by: _avO on October 31, 2010, 04:19:26 pm

Is this core? exam 1?

Title: Re: 2009 exam question 5
Post by: Studyinghard on October 31, 2010, 04:20:35 pm

geometry exam 1.

Title: Re: 2009 exam question 5
Post by: jasoN- on October 31, 2010, 04:24:41 pm

Not sure if this makes sense but;
given the volume of the first prism is (1/2)w x h x l = 160
whl/2 = 160
hence whl = 320

In the second prism, h = h, w = 2w, l = 3l
therefore;
V=(2w)(h)(3l)/2 = 3whl
as whl = 320; 3whl = 960, hence C

Title: Re: 2009 exam question 5
Post by: onerealsmartass on October 31, 2010, 04:25:51 pm

Quote from: jasoN- on October 31, 2010, 04:24:41 pm

Not sure if this makes sense but;
given the volume of the first prism is (1/2)w x h x l = 160
whl/2 = 160
hence whl = 320

In the second prism, h = h, w = 2w, l = 3l
therefore;
V=(2w)(h)(3l)/2 = 3whl
as whl = 320; 3whl = 960, hence C

nah thats how i did it. its all good.

Title: Re: 2009 exam question 5
Post by: superstar1 on October 31, 2010, 04:26:21 pm

yeh thats how it goes. i used the close to the same method.