It is known that the side area of a cylinder is 37.68 square decimeters and the height is 3 decimeters. What is its surface area dm**2.
已知一个圆柱的侧面积是37.68平方分米，高是3分米，它的表面积是多少dm**2．
<gadget id="calculator">37.68 / 3</gadget>
<output>12.56</output>

<gadget id="calculator">12.56 / 3.14 / 2</gadget>
<output>2</output>

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

<gadget id="calculator">3.14 * 4 * 2</gadget>
<output>25.12</output>

<gadget id="calculator">37.68 + 25.12</gadget>
<output>62.8</output>

<result>62.8</result>