What is the length of a leg of an isosceles right triangle whose hypotenuse measures 6 inches?

A right triangle is shown. The hypotenuse has a length of 6. The lengths of the other 2 sides are a.

Let c represent the value of the hypotenuse. If the hypotenuse is c = aStartRoot 2 EndRoot, then 6 = aStartRoot 2 EndRoot. In inches, what is the value of a?

3
3 StartRoot 2 EndRoot
6
3 StartRoot 2 EndRoot