need some geometry help

[OrganizedChaos]

trying to find the volume of a triangular prism.

Height: 8 ft
Width (bottom side): 18 ft
left side about 13 ft
right side about 12.5 feet.
lenght: 26 feet.

do i need to measure the length of 3 sides to figure this out? or anyone have a link that explains how to do this?

k thx for the help, figured it out to be around 1800 cubic feet

 

[jagec]

nm, I'm stupid.

Get the area of the triangle (1/2 bh), multiply by the height of the prism.

 

[astrocase]

Many math books will have all the formulas on the inside covers.

 

[OrganizedChaos]

Originally posted by: jagec
nm, I'm stupid.

Get the area of the triangle (1/2 bh), multiply by the height of the prism.

nm

 

[OrganizedChaos]

Originally posted by: OrganizedChaos

Originally posted by: jagec
nm, I'm stupid.

Get the area of the triangle (1/2 bh), multiply by the height of the prism.

nm

gah, said something different when i forst quoted it

 

[xanis]

V = 1/2(L*W*H )

 

[Kelemvor]

Originally posted by: jagec
nm, I'm stupid.

Get the area of the triangle (1/2 bh), multiply by the height of the prism.

1/2 bh is only for Right Triangles isn't it?

Err well it's not but calculating the H part is hard if it's not a right triangle...

 

[Howard]

Integrate the function of the cross-sectional area with respect to x?

 

[Kelemvor]

Here's a site that will giv eyou the triangle area if you know the 3 sides... THen multiply that by the height.

Scroll to the bottom
http://www.mste.uiuc.edu/dildine/heron/triarea.html

 

[SLCentral]

Just learned this last week. V=Bh, B equaling the area of the base, and h being the height of the prism.

Remember, area of a triangle is A=.5ans, a being the apotham, n being the number of sides, and s being the side length.