WORTH EXTRA POINTS! Pythagrem theroem 7th grade math EASY. Will mark brainliest

Answer:
A. x=√60
Step-by-step explanation:
Divide 4 in half because you are solving half of an isosceles triangle
You formula is x²+2²=8²
Square root what you can: x²+4=64
Isolate the variable: x²=60
Square root both sides, x=√60