Mathematics
9 Online
OpenStudy (anonymous):
Please help find volume =
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OpenStudy (anonymous):
OpenStudy (anonymous):
find the area of the triangle at the top, then multiply by height
OpenStudy (anonymous):
so the area of the triangle is base x height divided by 2
OpenStudy (anonymous):
6(4) divided by 2
OpenStudy (anonymous):
so 4x8?
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OpenStudy (anonymous):
then multiply by 8
OpenStudy (anonymous):
144?
OpenStudy (amistre64):
4x8 is fine
OpenStudy (amistre64):
then multiply by 6
OpenStudy (anonymous):
192?
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OpenStudy (amistre64):
32*6=192; yep; then divide that in half since its a triangle shape
OpenStudy (anonymous):
in half wby what?
OpenStudy (amistre64):
??? what do you mean
OpenStudy (anonymous):
that might not work
OpenStudy (amistre64):
its a rt triangle; half of a box ... itll work fine
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OpenStudy (anonymous):
what do i divide 192 bye?
OpenStudy (amistre64):
split 192 in half ....
OpenStudy (anonymous):
whats half of 192?
OpenStudy (amistre64):
you really need to do that one on your own .....
OpenStudy (amistre64):
it may look like the 6 is a hypot; but its really a leg by the diagram
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OpenStudy (anonymous):
i feel so stupid 96 haha
OpenStudy (amistre64):
much better :)
OpenStudy (anonymous):
how do u do a la version i cant figure it out
OpenStudy (anonymous):
A prism of height 12" has a rhombus with diagonals 6" and 8" for a base. Find the volume and the lateral area.
V = cu. in.
L.A. = sq. in.
OpenStudy (amistre64):
LA just means the area of the sides; without the top and bottom
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OpenStudy (amistre64):
lateral area
OpenStudy (anonymous):
now i k the volume is 288 but how u do la
OpenStudy (amistre64):
split your diags in half .... and use them to find the length of your sides
OpenStudy (amistre64):
you end up with a 3-4-5 triangle where 5 is the side lentgth of the rhombus
OpenStudy (amistre64):
since the height is 12; you have 4 sides that are 12*5 in area
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OpenStudy (anonymous):
so 60?
OpenStudy (amistre64):
OpenStudy (amistre64):
yep; one side is 60; now there are 4 sides altogether