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calculate the resultant increase in lenth of a 5m long roof tie rod made of 25mm diameter steel when subject to a tensile load of 80 KN. (assume E=210KM/mm2)

does anybody know how to solve this or what the calculation is that i gotta use? help apprecited thanks in advance!

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# Calculate resultant increase in length of a 5mm long roof tie CAN SOMEONE HELP ME !

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