Volume by Cross Section (1 Viewer)

[lisarh]

Hi, can someone please help me with this question.
Firstly, I don't know where to start.
And secondly, I'm not sure if I even labelled it right. xD

The answer is

3091m³

 

[jet]

 

[lisarh]

OH. thanks heaps jetblack2007
wording tricked me there