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Answer: Pi integral from 0 to 8 (sqrt(100-y^2)^2-6^2)dy Final answer
The region being rotated is the triangular slice with vertices at ... . Recall that for washers, the volume is v = ∫ π(R^2-r^2) dy Here, R is the circle, and r is the line x=6. Answer: Pi integral from 4 to 0 (sqrt(25-y^2)^2-6^2)dy
Sorry, I was wrong. THE ANSWER IS 4.5 Which is B
Answer: a) -4.5 From 1 to 4 integralx^2 -5x+4dx Plug it in the calculator and get -4.5.