There is a circular grass field with a radius of 12 meters, and a pony is tied to the center of it. If the length of the rope is 5 meters, how much grass is the area that the pony cannot eat?
有一块半径是12米的圆形草地，它的正中心拴了一匹小马，如果绳子长是五米，那么小马吃不到的草地面积是多少？
<gadget id="calculator">12 ** 2</gadget>
<output>144</output>

<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">144 - 25</gadget>
<output>119</output>

<gadget id="calculator">3.14 * 119</gadget>
<output>373.66</output>

<result>373.66</result>