The feet of a commemorative parabolic steel arch 100m high are 200m apart. Determine whether the focus of the arch is above or below ground and indicate the number of feet it lies above or below ground.
75 ft above
25 ft above
25 ft below
75 ft below
+2
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Home » Mathematics » The feet of a commemorative parabolic steel arch 100m high are 200m apart. Determine whether the focus of the arch is above or below ground and indicate the number of feet it lies above or below ground.