A rectangle is 6cm long and 4cm wide, and it is rotated around the width of the rectangle to obtain a three-dimensional figure. What is the surface area of this three-dimensional figure?
一个长方形长6cm，宽4cm，以长方形的宽为轴旋转一周得到一个立体图形，这个立体图形的表面积是多少？
<gadget id="calculator">6 ** 2</gadget>
<output>36</output>

<gadget id="calculator">2 * 3.14 * 36</gadget>
<output>226.08</output>

<gadget id="calculator">2 * 3.14 * 6 * 4</gadget>
<output>150.72</output>

<gadget id="calculator">226.08 + 150.72</gadget>
<output>376.8</output>

<result>376.8</result>