2009 exam question 5

[Studyinghard]

can someone explain?

[_avO]

Is this core? exam 1?

[Studyinghard]

geometry exam 1.

[jasoN-]

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

[onerealsmartass]

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.

[superstar1]

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