38.Calculate the surface area of the surface obtained by revolving the curve y = √9-x² around the x-axis for 1 < x < 3.

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can you help me answer number 38 and 39

38.Calculate the surface area of the surface obtained by revolving the curve y = √9-x²
around the x-axis for 1 ≤ x < 3.
39. What is the length of the curve y = √x-
between x = 0 and x = 2?
Transcribed Image Text:38.Calculate the surface area of the surface obtained by revolving the curve y = √9-x² around the x-axis for 1 ≤ x < 3. 39. What is the length of the curve y = √x- between x = 0 and x = 2?
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