What is the exact length of the hypotenuse if the legs of a right triangle are 2 in. each?

Name: What is the exact length of the hypotenuse if the legs of a right triangle are 2 in. each?
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Question

What is the exact length of the hypotenuse if the legs of a right triangle are 2 in. each? ​

Quizplus · Accepted Answer

Using the Pythagorean theorem, we can find the length of the hypotenuse. 
c^2 = a^2 + b^2 
c^2 = 2^2 + 2^2 
c^2 = 8 
c = sqrt(8) = 2sqrt(2) 
Therefore, the exact length of the hypotenuse is 2sqrt(2) inches, which is represented by answer choice B.

What Is the Exact Length of the Hypotenuse If the Legs