Answer:
12√2
Explanation:
All sides of a square are congruent.
The diagonal of a square is the hypotenuse of a triangle that has 2 sides of the square as the legs.
Let the sides of the square have length x.
a² + b² = c²
x² + x² = 24²
2x² = 576
x² = 288
x = √288
x = 12√2
Answer: 12√2