Question 1194390
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<pre>

    {{{pi*r^2}}} = 100  in^2  is your area equation, with the unknown radius "r".


From this equation.

    {{{r^2}}} = {{{100/pi}}}

and

    r = {{{sqrt(100/pi)}}} = {{{sqrt(100/3.14159)}}} = use your calculator = 5.642  inches  (rounded).    <U>ANSWER</U>
</pre>

Solved.