SOLUTION: the perimeter of a rectangular field is 280 cm and its breath is 60 m , the length of its diagonal is closed to .. ?

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Question 995528: the perimeter of a rectangular field is 280 cm and its breath is 60 m , the length of its diagonal is closed to .. ?
Answer by ikleyn(52794) About Me  (Show Source):
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The length of the field is  %28280-2%2A60%29%2F2 = %28280-120%29%2F2 = 160%2F2 = 80 m.

Hence,  the diagonal of the field has the length  sqrt%2880%5E2+%2B+60%5E2%29 = sqrt%286400%2B3600%29 = sqrt%2810000%29 = 100 m.

Answer.  100 m.