Answer:
Explanation:
Find

(Sides of a square are equal)

(subtracted 2 from both sides)
(subtracted
from both sides)
(added 8 to both sides)
(divided both sides by 2)
Find


(since
)

Find

(sides of a square are equal)
(Pythagoras Theorem )


=
find

(diagonals of a square are equal)