A cylinder whose height is 4 cm has a lateral area of 37.68 cm2, what is its surface area?
一个高是4厘米的圆柱，侧面积是37.68平方厘米，它的表面积是多少？
<gadget id="calculator">37.68 / 4</gadget>
<output>9.42</output>

<gadget id="calculator">9.42 / 3.14 / 2</gadget>
<output>1.5</output>

<gadget id="calculator">1.5 ** 2</gadget>
<output>2.25</output>

<gadget id="calculator">3.14 * 2.25 * 2</gadget>
<output>14.13</output>

<gadget id="calculator">37.68 + 14.13</gadget>
<output>51.81</output>

<result>51.81</result>