P In an ellipse the distance between the foci is 8 and W the distan...

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In an ellipse the distance between the foci is 8 and
W the distance between the directrices is 25 . The length of major axis is
(1) \( 10 \sqrt{2} \)
(2) \( 20 \sqrt{2} \)
(3) \( 30 \sqrt{2} \)
(4) None of these
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