Find the Y-Coordinate of the Centroid of the Semiannular Plane $1 \leq x ^ { 2 } + y ^ { 2 } \leq 4$

question 102

Essay

Find the y-coordinate of the centroid of the semiannular plane region given by $1 \leq x ^ { 2 } + y ^ { 2 } \leq 4$ , $y \geq 0$ . Sketch the plane region and plot the centroid in the graph.

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