Ac is diagonal of square abcd, and the length of ac is 4. what is the area of the square? a) 2√2 b) 6 c) 4√2 d) 8 e) 8√2

Option d.
as we know the corner of a square is always 90°. So we can apply that (side of the square)^2+(side of the square)^2 = (diagonal of the side)^2

(side of the square)^2+(side of the square)^2 = 16
16/2=8
8=(side of the square)^2
side of square= squareroot of 8
area of square= squareroot of 8^2=8
hence answer is 8

Uneed to add them up 27+18+23=68