If a bird flies at a speed of 30√2 m/min along the diagonal line

The area of a square field is 36m². If a bird flies at a speed of 30√2 m/min along the diagonal line, then the time (in seconds) required for it to cross the field is ……
(a) 8
(b) 5
(c) 11
(d) 12

Anurag Mishra Professor Asked on 23rd May 2016 in Maths.
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    Answer: (d) 12 

    Anurag Mishra Professor Answered on 24th May 2016.
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