Can some1 help me find the volume of a triangular prism ? pleasee

Question

elisaneedshelp · Answer

Length of rectangle:7
Base of triangle:6.4
Base of angle of triangle:63 degrees

elisaneedshelp · Answer

lateral SA=170.8
SA=211.12
Base area=20.16

elisaneedshelp · Answer

@UnkleRhaukus ? do you know?

unklerhaukus · Answer

can you draw it?

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elisaneedshelp · Answer

yes

unklerhaukus · Answer

If you have figured out the area of the triangular base already
you just need to multiply this area by the length of the rectangle 

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$$A=b\times\ell$$

unklerhaukus · Answer

Whops *mistake*
(should be volume)

$$\large V=b\times\ell$$

elisaneedshelp · Answer

141.12? :/

unklerhaukus · Answer

yeah that's what i'm getting too

unklerhaukus · Answer

good work

elisaneedshelp · Answer

oh ok cuz some other girl helped me and she did something different and she concluded the answer of 282.24 and today i was doubting it

unklerhaukus · Answer

well, i think she is off by a factor of 2 for some reason.

elisaneedshelp · Answer

she used a triangle formula or something it was like 1/2 bhl or something like that

elisaneedshelp · Answer

Can you help me find the slant height of a regular tetrahedron now plzz? if you can (with an edge of 10.4)

unklerhaukus · Answer

All the sides of a tetrahedron are equilateral triangles |dw:1399349605012:dw|

unklerhaukus · Answer

|dw:1399349738409:dw|

unklerhaukus · Answer

im not sure exactly what they mean by slant height

unklerhaukus · Answer

This height?  |dw:1399349899793:dw|

elisaneedshelp · Answer

i think they mean this height |dw:1399350036059:dw|