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- 23:13, 27 January 2020 (diff | hist) . . (+415) . . N 2019 Mock AMC 10B Problems/Problem 4 (Created page with "To make use of the A=rs formula, we can put four of the isosceles right triangles together to form a rhombus, with a circle circumscribed into it. The area of the rhombus woul...") (current)
