Answer
56 feet
Work Step by Step
area of garden is 6270 $ft^2$
area is side length *side length
side length of garden is $\sqrt {6270}$
side length is 79.183 feet
The radius of the circle is half of the hypotenuse of a triangle that is inscribed within the square.
$79.183/2=39.591$
$39.591^2+39.591^2 = x^2$
$1567.5+1567.5=x^2$
$3135 = x^2$
$\sqrt {3135} = \sqrt {x^2}$ (we only want the positive root since we are talking about distances)
$55.99 = x$