Urban lawns are often irrigated with an automatic rotary sprinkler. A sprinkler irrigation device has a range of 10 meters, how many square meters can it irrigate?
城市的草坪常用一种自动旋转喷灌装置来浇灌．一种喷灌装置的射程是10米，它能喷灌的面积有多少平方米？
<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

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

<result>314</result>