Let s = side length of square

4s = 24, therefore s = 6

Radius of circle can be calculated by observing a simple drawing (it's critical to always draw what the question is asking!).

You will notice that the radius, r, will be the hypotenuse of a right isosceles triangle. The other two sides of the triangle are bounded by one-half of a side of the square.

r^2 = 3^2 + 3^2
r = 3*sqrt(2)

Circ = 2*pi*r = 6*sqrt(2)*pi

One more approach ( this is wat i would do ]

We know each side of a Square would be 6

Now write a rough diagram and and draw a diagonal. we see the length of the diagonal = diameter of the circle
i.e. s root2= length of the diagonal

now we have radius=3 root2 and circumference =- 2 * pi * 3 root2

answer :6 root 2 pi

Hope it helps

Cheers