Find the area of the surface generated when the indicated arc is revolved about the y -axis. 6. y = lnx from x = 1 to x = 2√2 7. x = x = cos2y from y = 0 to y = π/4

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A: SOLUTION-

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A: Solution is given below:

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A: solution is given below

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A: Topic:- application of derivatives

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A: Given: Matrix data is given

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A: average rate fo change in an interval (a,b) =f(b)-f(a)b-a

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A: The Solution is given below

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A: Above question is solved.