Answer:
D.

Explanation:
Using the Pythagorean theorem, we can use the equation
a^2+b^2=c^2
to find the hypotenuse (the longest side of a triangle).
let's plug in the values!
8^2 +10^2=c^2
64 + 100 = c^2
164 = c^2
now find the square root of 164.

the closest answer is
D.
