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A cable of a suspension bridge is in the...

A cable of a suspension bridge is in the form of a parabola whose span is 40m. The road way is 5m below the lowest point of the cable. If an extra support is provided across the cable 30m above the ground level. Find the length of the support if the height of the pillars are 55 mts.

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The correct Answer is:
`20sqrt2`
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FULL MARKS-TWO DIMENSIONAL ANALYTICAL GEOMETRY-II-Additional Question Solved
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