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## Homework Statement

Find area of surface generated by revolving about x-axis.

y=x^3/3 1<=x<=sqrt(7)

## Homework Equations

find f'(x) = x^2

## The Attempt at a Solution

A = integral[ (x^3/3) * [(1+(x^2)^2] ^(1/2) ] ]dx

= integral[ (x^3/3) * [(1+x^4) ^(1/2) ]dx

I just don't know where to go from here.

Any help is appreciated,

Thank You.