Struggling with what seems like a simple enough question (1 Viewer)

[manik99]

Hey guys,

Been stuck on this volumes question a while and I cant seem to get a positive answer.
Appreciate it if anyone could help out.

Question 4b) on the paper attached.

Cheers

 

[tsoliman1]

Heres my working. Hope this helps.

http://imgur.com/JfCgMuv