#volume of revolution

1 messages · Page 1 of 1 (latest)

strange loom
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<@&791435371564892232>

lime torrent
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still need help?

strange loom
strange loom
lime torrent
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can u send it through and ill check

strange loom
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I’m pretty sure it’s not right cuz I got -8pi from my integration

lime torrent
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when ur doing the integral of x^2 dy

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u know that x² = 2 - y

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so its just ∫ (2-y) dy

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x π

strange loom
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Oh so can you not do it the other way by changing the dy part to be in terms of dx

lime torrent
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lemme think abt it

strange loom
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I think your method is much better I’ll do that

lime torrent
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calm 👍

strange loom
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Oh I see because I did it in terms of x but my limits where for y so it wouldn’t work

lime torrent
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id say see if u get the answer if u change the limits

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still wouldnt recommend doing ti that way tho

strange loom
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What do I do once I got it

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Do I just do 900 divided by my answer

strange loom
lime torrent
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so mass = density * volume

strange loom
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Because it’s 900kgm^-3 so to get rid of the m^-3 do I need to multiply

lime torrent
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so yeah multiply 900

lime torrent
strange loom
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Ok cool thanks alottt

lime torrent
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nws