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jmc

geometry junior

Problem

Two congruent squares, and , have side length . They overlap to form the by rectangle shown. What percent of the area of rectangle is shaded?
problem
(A)
(B)
(C)
(D)
Solution
The overlap length is , so the shaded area is . The area of the whole shape is . The fraction reduces to or 20%. Therefore, the answer is
Final answer
C