The range of the automatic sprinkler irrigation device on the green land is 8 meters. How many square meters can it irrigate?
绿地上自动喷灌装置的射程是8米，它能喷灌的面积有多少平方米？
<gadget id="calculator">8 ** 2</gadget>
<output>64</output>

<gadget id="calculator">3.14 * 64</gadget>
<output>200.96</output>

<result>200.96</result>