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Two simple mathematical problems about circle
Question 1: let AH=X, because ∠ b = 45, so AH=BH=X, because ∠ c = 30, then CH=? x,

BH+CH=X+? X=500, and X is approximately equal to 183, less than the radius of 300. The road runs through the forest.

Question 2: As shown in the figure, a circle is a circle with a radius of 130, e is the center, OA=200, ∠ AOE = 37, so AE: EO: AO = 3: 4: 5, so AE= 120, EG =1. =50, so FG= 100, FG is actually the distance traveled by cars during the school disaster, so 100 divided by 5 equals 20, so the answer is 20s.