If the base area of a cylinder is 10m**2 and the side area is 1.6m**2, what is the surface area of the cylinder in m**2?
一个圆柱的底面积是10m**2，侧面积是1.6m**2，则这个圆柱的表面积是多少m**2．
<gadget id="calculator">10 * 2</gadget>
<output>20</output>

<gadget id="calculator">1.6 + 20</gadget>
<output>21.6</output>

<result>21.6</result>