iffy questions exam 2

[dcaridi]

hey guys i was wondering if u could help my by telling me what answers u got on the question about the right cone fuel tank in trig?

[Ilovemathsmeth]

I got 93.6%. The number of decimal places was unspecified. I worked it out like this:

Height ratio = 50 : 20 = 5:2
Volume ratio = 125: 8
Removed part = 125 - 8 = 117
% of oil removed = 117/125 x 100/1

[halobro]

I got 93.6%. The number of decimal places was unspecified. I worked it out like this:

Height ratio = 50 : 20 = 5:2
Volume ratio = 125: 8
Removed part = 125 - 8 = 117
% of oil removed = 117/125 x 100/1

Who, I did it the hard way. I created my own radii being 10 and consequently 4 given the scaling. Then found both volumes. Then divided it and what not which gave me my answer of 93.6%

[techhatesme]

[quote author=halobro link=topic=19179.msg193261#msg193261 date=1257323076

Who, I did it the hard way. I created my own radii being 10 and consequently 4 given the scaling. Then found both volumes. Then divided it and what not which gave me my answer of 93.6%
[/quote]

Damn it, sounds so logical now. Not enough prep.

[nikinoo]

oh gees.. my ways seems stupid but

i went
2/5 = 0.4
0.4^3 = 0.064
0.064 x 100 = 6.4
100-6.4 (because fraction removed)
= 93.6 

wow.. weird. my looks silly.. haha

[Fireworks]

oh gees.. my ways seems stupid but

i went
2/5 = 0.4
0.4^3 = 0.064
0.064 x 100 = 6.4
100-6.4 (because fraction removed)
= 93.6 

wow.. weird. my looks silly.. haha

I did it this way

[pbesson]

will 94% be accepted?

[lucyk]

wait, if it start off at a height of 5 and ended with 2, doesn't that mean 3 was removed?? crapppp

[halobro]

[quote author=halobro link=topic=19179.msg193261#msg193261 date=1257323076

Whoa, I did it the hard way. I created my own radii being 10 and consequently 4 given the scaling. Then found both volumes. Then divided it and what not which gave me my answer of 93.6%

Damn it, sounds so logical now. Not enough prep.
[/quote]

Why thank you
Getting complemented by you is like Shane Warne telling me I'm a pro spin bowler. Or not.... But in all honesty, I just used it as a long way round tool that works, because I knew that if I attempted it your way would most likely mess up a ratio or what not.

Good luck tomorrow with accounting!

[Hooligan]

I got 93.6%. The number of decimal places was unspecified. I worked it out like this:

Height ratio = 50 : 20 = 5:2
Volume ratio = 125: 8
Removed part = 125 - 8 = 117
% of oil removed = 117/125 x 100/1

you did the exact same way I did it!!