Build a cylindrical pool with a bottom radius of 2m and a depth of 3m. Put cement on the four walls and bottom of the pool. What is the area of the cemented part in square meters?
修建一个圆柱形的水池，底面半径是2m，深3m，在水池的四壁与底面抹上水泥，抹水泥部分的面积是多少平方米？
<gadget id="calculator">3.14 * 2 * 2 * 3</gadget>
<output>37.68</output>

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

<gadget id="calculator">3.14 * 4</gadget>
<output>12.56</output>

<gadget id="calculator">37.68 + 12.56</gadget>
<output>50.24</output>

<result>50.24</result>