I guess that is 1.75 metres: 12 in = 1 ft 0.0254 m = 1 in ⇒ 1.75 m = 1.75 ÷ 0.0254 in ≈ 68.9 in = 68.9 ÷ 12 ft ≈ 5 ft 9 in.
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