Question 629676
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Hi,
Base of triangle is x, height of triangle is x+1, and the hypotenuse is 5.
 Using the Pytahgorean theorem
     x^2 + (x+1)^2 = 5^2
      2x^2 + 2x + 1 = 25
       x^2 + x - 24 = 0
        (x + 4)(x-3) = 0
                 x = 3  (throwing out the negative solution for unit measure
 Cutting across the lawn saves 3 + 4 - 5 = 2 units of measurement