How to find Cross-Sectional Area of Prism?

I know the formula to find the volume of a Prism is A x L, but I keep getting confused as to how to find the Cross-Sectional Area in order to find the volume. :confused:

Reply 1

shamrock92

What kind of prism? It's usually just a triangle, so

\frac{1}{2}bh

Reply 2

win2kpro

Is this a traingular prism? If it is then shamrock92 is right.

Reply 3

Alex22Spurs

Say a question in my GCSE exam was 'Find the volume of this Prism'...how would you work it out?

Reply 4

win2kpro

You would need the cross-sectional area and the length of it usually. If they only give you one side for the triangle(cross-section) of the prism and an angle then I guess you need to use your sine maybe cosine rule to work out the other side to find the area.

An area of any triangle is calculated by