The inner wall and the bottom of a cylindrical pool should be plastered with cement. The diameter of the bottom of the pool is 5 meters, and the depth of the pool is 12 decimeters. How many square meters is the area covered with cement?
一个圆柱形水池的内壁和底面都要抹上水泥，水池底面直径是5米，水池深12分米．抹水泥的面积是多少平方米．
<gadget id="calculator">12 / 10</gadget>
<output>6/5 = around 1.2</output>

<gadget id="calculator">3.14 * 5 * (6/5)</gadget>
<output>18.84</output>

<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">(5/2) ** 2</gadget>
<output>25/4 = around 6.25</output>

<gadget id="calculator">3.14 * (25/4)</gadget>
<output>19.625</output>

<gadget id="calculator">18.84 + 19.625</gadget>
<output>38.465</output>

<result>38.465</result>