Question 1143605
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The distance she must travel is the diameter of a circle whose area is 100 square meters.<br>
{{{A = 100 = (pi)(r^2)}}}<br>
{{{r^2 = 100/pi}}}
{{{r = 10/sqrt(pi)}}}
{{{d = 20/sqrt(pi)}}}<br>
time = distance/rate<br>
{{{(20/sqrt(pi))/10 = 2/sqrt(pi)}}}<br>
The number of minutes it will take her to cross the field is {{{2/sqrt(pi)}}}