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The entrance to a tunnel is shaped like a semi-ellipse. The height of the tunnel at the center is 20 feet, and the width of t

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given thal width the tunnel 48 feel. the center is and height 20 feel hence Dengan dength of major axis 98 feel l minor axis20x 5476 JO 24 .18.18 feel 18,18 feet hence, height of the tunnel safety eross the triche al no feel Form the center nx tunne

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