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/sci/ - Science & Math

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4729105 No.4729105 [Reply] [Original]

A prism (not triangle-thingy, normal prism) with only 90-degree-angles has a volume of 200 cm^3. The base (the "g" in the norwegian V = gh (Volume = base times height)) is three times as large as the width. What's the lowest value of surface available to this prism?

Explain this so that a 140+ guy can get an A on his exam without working for it.

>> No.4729106

>>4729105
>A prism (not triangle-thingy, normal prism)

wat

>> No.4729108

>>4729106

*length of the prism
>rectangular prism is probably more academic

>> No.4729110

Do your homework somewhere else fag.
Don't take the class if you aren't interested in putting in the work.

>> No.4729111
File: 22 KB, 1094x712, shittyprism.png [View same] [iqdb] [saucenao] [google]
4729111

>>4729106
Like this

>> No.4729114

what do you mean by "width"?

a picture is worth a thousand words, btw

>> No.4729119

>>4729110
meh, i just want to nail a B, go to uni, study molecular biology, achieve immortality, take over the world, have sex with alison brie, impregnate her, study nanotechnology, turn myself into a liquid of constant happiness.

>> No.4729120
File: 16 KB, 474x216, scifagz.png [View same] [iqdb] [saucenao] [google]
4729120

>>4729114

>> No.4729126

>not triangle-thingy, normal prism

A prism can have two triangular faces and still be normal.

>Explain this so that a 140+ guy can get an A on his exam without working for it.

nevermind, troll, 3/10

Anyways you should be able to solve this without working for it if you have an IQ of over 90.

>> No.4729128

>>4729120
ok, the word you are looking for this object is "cuboid"

V = 3x^2h = 200

so h = 200/(3x^2)

A = 3x^2 + 3xh + xh = 3x^2 + 4xh

substitute h

A = 3x^2 + 800/(3x)

differentiate, set to zero, etc

>> No.4729157

>Explain this so that a 140+ guy can get an A on his exam without working for it.

Really?

Kid you don't know shit