plssssssss helppppppppppp

Explanation:
Hey there!
Given that it is isosceles, so the height and bases are 2 units.
So, we can apply Pythagoras Theorem.
[tex]\tt{\sqrt{ (2)^2 + (2)^2} = Hypotenuse}[/tex]
So, The required answer is [tex]\sf{2 \sqrt{2}}[/tex] units.
And hence c part.
Hope it helps :)