There is a water spray gun fixed in the center of the lawn. Its spraying distance is up to 10 meters. How many square meters of lawn can it spray at most?
有一个喷水枪固定在草坪中央，它的喷水距离最远是10米，它最多可以喷洒多少平方米的草坪？
<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

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

<result>314</result>