# General Thoughts: Mathematics (1 Viewer)

#### jordiviv

##### New Member
Does anybody know of any solutions posted online as of yet?
...or when some might be released?

#### kliro_10

##### New Member
nahh you had to start off saying that 0<Q<2pi and then sub in the value for Q that you found in part (i) and rearrange by splitting up the inequality and solving, then bringing it back together

##### Member
Anyone know what band 84/120 would be?
Reps!

#### someth1ng

##### Retired Nov '14
Anyone know what band 84/120 would be?
Reps!
Band 5 - should be roughly a mid-high Band 5. If you got a mark like that - expect something like 86-88.

#### forkandspoon

##### New Member
Does anyone know the ratio of the volume of the cylinder to the volume to the paraboloid?

#### umz93

##### Member
What do you think the cut-off will be?

#### mitchh81

##### Member
not sure but did everyone get $\bg_white \frac{\prod h^3}{3}$ units
for the volume for 8bi

##### Member
Pretty happy, went better than I thought I would. Thankfully its all over. Never have to do Mathematics again!!!!!

#### forkandspoon

##### New Member
not sure but did everyone get $\bg_white \frac{\prod h^3}{3}$ units
for the volume for 8bi
i dunno. i got (pi)(h^2)/2...

#### jgalpin

##### New Member
no, it increased by 6.3%

#### jgalpin

##### New Member
i got pi h^3 / 3 coz u had to intergrate c^2

+1

#### jgalpin

##### New Member
No it wasn't....... it was a geometric series not limiting sum, answer came out to be around 23.98

#### gunat61

##### Member
what raw mark do you reckon you would need for 85?

#### Kimbles2011

##### Member
I just want a band 6 - what do you think will be the raw score for 90%?

#### forkandspoon

##### New Member
i got pi h^3 / 3 coz u had to intergrate c^2
Huh? why? What do you think i did wrong? i found the volume about the y axis. so V= (pi) integral of (x^2) dy. But y=x^2 sooo...
Therefore, integral of (y)dy from 0 to h. Therefore, = (pi)(Y^2)/2.. now i subbed in limits: (pi)(h^2)/2.. where did the 'c' come from?

#### forkandspoon

##### New Member
I just want a band 6 - what do you think will be the raw score for 90%?
94/120 or 95/120. so around 79%

#### Kimbles2011

##### Member
94/120 or 95/120. so around 79%
Thanks for replying I think that's quite achievable

#### umz93

##### Member
Thats what I thought, because it was a definite integral!

#### forkandspoon

##### New Member
So is it (pi)(h^2)/2........or.......(pi)(h^3)/3