Question 354211
Start with the formula for the area of a circle:
{{{A = (pi)r^2}}} but you want this in terms of the diameter, and {{{r = D/2}}}, so...
{{{A = (pi)(D/2)^2}}} Substitute D = 25 meters and {{{pi = 3.14}}} as an approximation.
{{{A = (3.14)(25/2)^2}}} evaluate.
{{{A = 3.14(625/4)}}}
{{{A = 3.14(156.25)}}}
{{{highlight(A = 490.625)}}} square meters.