For a portion of highway the line AB meets BC. Point A is at a MSL of 2000 m and point B is at a MSL of 1999.9 m which is at a distance of 2.5 m and point C which is at a distance of 5m from A is at a MSL of 2000.025 m. A valley curve needs to be designed at a velocity of 90 kmph. Take t = 2.5 sec, f = 0.35. The length of the valley curve is _____ m
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