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SAT Practice Test 1: Section 3 — Question 17 (Math)

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much easier way is since fc is 5sqroute2 then f straight down = 5 both squares equal so bottom of shaded is 10. 10 x 5 = 50

Much easier method: Find AC = 20. Then divide 20 by 4, which means the midpoint of DC = 5. 5×5 = 25, 25×2 = 50