The range of a rotary sprinkler on the grass in the square is 10 meters. What is the maximum area of the grass that it can sprinkle on?
广场草地上一个旋转洒水器的射程是10米，它能洒到草地的面积最大是多少平方米？
<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">3.14 * 100</gadget>
<output>314</output>

<result>314</result>