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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.

A right triangle with a side length of StartRoot 2 EndRoot and hypotenuse of 4.

Answer :

Answer:

It'll be the first answer

Explanation:

got it right on edge 2021