This is the tricky question , and its answer is 0 .
The Height of Pole 50 m .
The Full Length of Cable is 80 m .
Half length cable is 40m .
The cable is 10 up from Ground . then we will find length of pole is 40 m. ( Remaing ) ( 50m - 10 m = 40 m)
so, the result is both poles are stand on...
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