Question 830494
{{{area = (pi)r^2}}}
{{{625 = (pi)r^2}}}
divide by {{{(pi)}}}
{{{625/(pi) = r^2}}}
take square root of each side
{{{sqrt(625/(pi))=r}}}
since diameter = 2 times radius
{{{d=2sqrt(625/(pi))}}}
{{{d=2*25sqrt(1/(pi))}}}
{{{d=50sqrt(1/(pi))}}} = 28.21