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An arc is in the form of a semi-ellipse....

An arc is in the form of a semi-ellipse. It is `8m` wide and `2m` high at the centre. Find the height of the arch at a point `1. 5 m` from one end.

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Here, `2a=8`
`a=4,b=2`
Therefore, the equation of the semi-ellipse is `(x^2)/16​+(y^2)/4​=1,y≥0 ...(1)`
Let B be a point on the major axis such that AB=1.5 m
On substituting the value of x with −2.5 in equation (1), we obtain
`=>((−2.5)^2)/(16)​+(y^2)/4​=1`
...
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