A circular children's swimming pool has a bottom circumference of 25.12 meters and a pool depth of 0.75 meters. What is the area occupied by this swimming pool? (π takes 3.14)
一个圆形儿童游泳池，底面周长是25.12米，池深是0.75米，这个游泳池的占地面积是多少．(π取3.14)
<gadget id="calculator">2 * 3.14</gadget>
<output>6.28</output>

<gadget id="calculator">25.12 / 6.28</gadget>
<output>4</output>

<gadget id="calculator">4 ** 2</gadget>
<output>16</output>

<gadget id="calculator">3.14 * 16</gadget>
<output>50.24</output>

<result>50.24</result>