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:

$$\begin{gathered} a=30\text{m} \\ b=72\text{m} \\ {d}^2=a^2+b^2 \\ d=\sqrt{a^2+b^2}=\sqrt{30^2+72^2}=78=78\text{m} \\ \text{ Verifying Solution: } \\ t=a+b+d=30+72+78=180\text{m} \end{gathered}$$

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