A circular reservoir has an inner diameter of 6 meters and a depth of 1.2 meters. The inner wall of the pool and the ground are plastered with cement. How many square meters is the area of the cemented part?
一个圆形蓄水池地面内直径是6米，深1.2米，在池的内壁与地面抹上水泥，抹水泥部分的面积是多少平方米？
<gadget id="calculator">3.14 * 6 * 1.2</gadget>
<output>22.608</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9</gadget>
<output>28.26</output>

<gadget id="calculator">22.608 + 28.26</gadget>
<output>50.868</output>

<result>50.868</result>