Which triangle’s unknown side length measures 7 units?


A right triangle with a side length of 5 and hypotenuse with length StartRoot 74 EndRoot.

A right triangle with a side length of StartRoot 18 EndRoot and hypotenuse with length 5.

A right triangle with a side length of StartRoot 6 EndRoot and hypotenuse with length StartRoot 43 EndRoot.

Respuesta :

Answer:

A (A right triangle with a side length of 5 and hypotenuse with length [tex]\sqrt{74}[/tex])

Step-by-step explanation:

In a right triangle, the length of the sides satisfies the Pythagoras Theorem which is stated Mathematically below:

[tex]Hypotenuse^2=Opposite^2+Adjacent^2[/tex]

Option A

Length = 5

Hypotenuse =[tex]\sqrt{74}[/tex]

[tex](\sqrt{74})^2=5^2+Adjacent^2\\Adjacent^2=\sqrt{74}^2-5^2=74-25=49\\Adjacent=\sqrt{49}=7 \: Units[/tex]

All other options do not satisfy the Pythagoras Theorem.