AMC 8 2026 (Problem 11)

Squares of side length 1, 1, 2, 3, and 5 are arranged to form the rectangle shown below. A curve is drawn by inscribing a quarter circle in each square and joining the quarter circles in order, from shortest to longest. What is the length of the curve?
Rectangle formed by squares of side lengths 1, 1, 2, 3, and 5 with joined quarter-circle arcs
(A)  4π\text{(A)}\;4\pi(B)  6π\text{(B)}\;6\pi(C)  132π\text{(C)}\;\frac{13}{2}\pi(D)  8π\text{(D)}\;8\pi(E)  13π\text{(E)}\;13\pi