Math  /  Geometry

Question8. The underside of a concrete bridge forms a parabolic arch that is 40 m wide and 16 m tall at its centre. What is the height of the underside of the bridge exactly 5 m from the axis of symmetry? \therefore the helght of the undesside of the bridge 5 m foom Aos is 11 (to the lef) or 21 (to the right).

Studdy Solution
Calculate the height at the specified distance:
y=125(25)+16 y = -\frac{1}{25}(25) + 16 y=1+16 y = -1 + 16 y=15 y = 15
The height of the underside of the bridge exactly 5 m from the axis of symmetry is:
15 m \boxed{15 \text{ m}}

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