Concept explainers
Use the region R that is bounded by the graphs of
9. Region R is revolved about the line y = 1 to form a solid of revolution.
a. What is the radius of a cross section of the solid at a point x in [0, 4]?
b. What is the area A(x) of a cross section of the solid at a point x in [0, 4]?
c. Write an
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