Triangular land

Jana has a rectangular garden measuring 30 meters by 72 meters that she wants to split diagonally from corner to corner using a fence. How long does her fence need to be?

Correct answer:

d =  78 m

Step-by-step explanation:

a=30 m b=72 m  d2 = a2+b2 d=a2+b2=302+722=78=78 m   Verifying Solution:  t=a+b+d=30+72+78=180 m

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