Here is a video on how to find the surface area of a rectangular prism:

Triangular Prism: base x height divided by 2 x height.

3x8.5/2 x 5

=12.75 x 5

=63.75m

^{3}

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Triangular Prism: base x height divided by 2 x height

=8 x 4/2 x .5

16 x 6.5= 104

3/8= 0.375

0.374 x 104 =39cm

^{3}

here is a link on volume:

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