The school-run factory needs to build an uncovered cylindrical pool on a flat ground. The pool is 1 meter deep, with an inner diameter of 2 meters and a wall thickness of 0.2 meters. How many square meters will be covered with cement? (take л≈3)
校办工厂要在一块平坦的地面上起一个无盖圆柱形水池，水池深1米，内直径2米，壁厚0.2米，砌好后，底面、内壁、外侧面和圆形环口都要抹上水泥，一共要抹多少平方米？(取л≈3)
<gadget id="calculator">3 * 2 * 1</gadget>
<output>6</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">3 * 1</gadget>
<output>3</output>

<gadget id="calculator">1 + 0.2</gadget>
<output>1.2</output>

<gadget id="calculator">3 * 1.2 * 2 * 1</gadget>
<output>7.2</output>

<gadget id="calculator">1.2 ** 2</gadget>
<output>1.44</output>

<gadget id="calculator">1.44 - 1</gadget>
<output>0.44</output>

<gadget id="calculator">3 * 0.44</gadget>
<output>1.32</output>

<gadget id="calculator">6 + 3 + 7.2 + 1.32</gadget>
<output>17.52</output>

<result>17.52</result>