An arc of a bridge is semi-elliptical wi...

An arc of a bridge is semi-elliptical with the major axis horizontal. If the length of the base is 9m and the highest part of the bridge is 3m from the horizontal, then prove that the best approximation of the height of the acr 2 m from the center of the base is `8/3mdot`

`11/4m`

`8/3m`

`7/2m`

`2m`

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