Anyone know how to (Math Related)

Find out the Volume of something? I have a mass of 0.85 and i'm unsure how to work out this and my note book is gone somewhere D:

The question says

"The diagram above shows a solid triangular prism

The prism is made of wood.
The wood has a density of 0.85 Grams per Cm2 (Squared)

Work out the mass."

Well in order to work out mass you need volume I forget how.

The prism had a triangle with 12cm length/width and 8 CM height

the bigger rectangles (As the base) has 15 cm length/width and 12 cm height.

and finally the smaller rectangle (side) is 8 cm height and 15cm length/width.

Any ideas? D: I forgot completely.

Length x width x height

google it but the pyramid has a special rule there like a 1/3 or an angle in there somewhere

m = dv

Mass = Density * Volume

Yes, I'm Asian

<_<
>_>

Slide~

Haha classic Storm.

he need to find the volume first though so... ASIAN FAIL

Just noticed this emote lol

Thanks Now hopefully I do well D: I hate it because I have an exam for GCSE soon and i'm worried i'll fail D:

LoL. Did not read what he actually needed.

Diagram of it should be included. Not enough information of whether the triangle is right angled or not, what is the base (unless it is rectangle bottom and triangle top, which does not make sense unless irregular shaped object).

EDIT: You posted while I was writing this. So what do you need to know? Is my previous post enough?

Ohkay, i'm a moron. At the very front of the booklet ( It was stuck together by some sticky thing iono what.) of three test papers was a thing telling you how to work it out and stuff >_>

I DIDN'T EVEN SEE IT. Thats the dumb part.

Thanks for the help though guys.