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Mathematics 7 Online
OpenStudy (anonymous):

attaching file*

OpenStudy (m):

you have nothing attached

OpenStudy (anonymous):

i think its still processing ><

OpenStudy (m):

find volume of what?

OpenStudy (anonymous):

of the region(R2) being rotated about the line AB

OpenStudy (m):

\[V = \Pi \int\limits_{a}^{b}y ^{2}dx\]

OpenStudy (anonymous):

how do you find the boundaries

OpenStudy (m):

\[y = a \sqrt{x}\]

OpenStudy (m):

a = 3; b =2

OpenStudy (m):

it's given

OpenStudy (anonymous):

oh, i dont think those are the boundaries though is it? i think its simply to substitute in those numbers into the equation

OpenStudy (m):

you're right

OpenStudy (m):

0 to a is my guess

OpenStudy (m):

so 0 to 3

OpenStudy (m):

\[2x ^{3/2} |0 \to 3\]

OpenStudy (m):

= 10.39

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