Question: I need help solving these 2 problems. 5. Find the area of the surface generated by revolving about the x-axis the curve f(x) = 2/1

I need help solving these 2 problems.

5. Find the area of the surface generated by revolving about the x-axis the curve f(x) = 2/1 - xon [-1, 0]. 1 3 6. Find the area of the surface generated by revolving about the x-axis the curve y = -x On [0, /2]
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