I made the following errors:
On 6)d) I forgot to multiply my answer through by 8 and I also accidentally wrote that sin(2pi/3)=1/2 instead of root3/2.
On 7)b) I calculated the volume beneath the curve to be 1024pi/5. I also calculated that the small cylinder between x=0 and x=1/2 would have volume 32pi - I then added these volumes together to obtain my final answer.
On 8)e) I accidentally put the wrong coordinates in the wrong vectors - ie, all my working was correct but my final answers were (3, 33/5, 16/5) and (-1, 17/5 and 4/5).
I need an A in this paper as I got 100UMS in C3 last year and I need an A* grade. Could somebody estimate how many marks I will have lost and whether this will be an A or not please? Thank you