What is the length of the diagonal?
What is the length of the diagonal?
All the angles of a square are 90°
So a diagonal divides a square into a right angled triangle.
All the sides = 8 ft
Applying Pythagoras theorem,
Length of diagonal = ✓8^2 + 8^2 = ✓(64 + 64)
= ✓ 128
= 8√2
Correct answer is 8✓2