Let R be the region bounded by the curves y=cos x+sin x+1, x=-n/2, x=r/2, and the x-axis. Round all answers to two decimal places. (a) Approximate the area of R using left-endpoints and 4 rectangles of equal width. [ Select ] (b) Approximate the area of R using right-endpoints and 4 rectangles of equal width. [ Select ] (c) Approximate the area of R using midpoints and 4 rectangles of equal width. [ Select ]

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A: Please refer the attached image for complete solution. THANK YOU.