Answer: a) 92 yards, b) 29.29 yards and 672.99 sq. yd.
Step-by-step explanation:
Since we have given that
Area of square pen = 529 sq. yd
Let the length of each side be 'a'.
As we know the formula for "Area":

So, the perimeter of the square pen is given by

So, perimeter of square pen = Perimeter of round pen

So, the diameter of round pen is 
And the area of round pen is

Hence, a) 92 yards, b) 29.29 yards and 672.99 sq. yd.