The automatic spraying machine on the park lawn has a spraying range of 16.8 meters. How many square meters is the spraying area of this sprayer?
公园草坪的自动喷洒机，喷洒射程是16.8米．这种喷洒机的喷洒面积是多少平方米？
<gadget id="calculator">16.8 ** 2</gadget>
<output>282.24</output>

<gadget id="calculator">3.14 * 282.24</gadget>
<output>886.2336</output>

<result>886.2336</result>