cylindrical wood with a base diameter of 2 meters and a height of 10 meters, if it is cut longitudinally into two equal pieces along the bottom diameter, what is the surface area of one of them in square meters?
一个圆柱形的木料，底面直径2米，高10米，如果沿底面直径纵切成相等的两块，其中一块的表面积是多少平方米？
<gadget id="calculator">2 / 2</gadget>
<output>1</output>

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

<gadget id="calculator">3.14 * 1</gadget>
<output>3.14</output>

<gadget id="calculator">10 / 2</gadget>
<output>5</output>

<gadget id="calculator">3.14 * 2 * 5</gadget>
<output>31.4</output>

<gadget id="calculator">2 * 10</gadget>
<output>20</output>

<gadget id="calculator">3.14 + 31.4 + 20</gadget>
<output>54.54</output>

<result>54.54</result>