If the side area of a cylinder is 16.5 square centimeters and the base area is 9.5 square centimeters, what is its surface area in square centimeters?
一个圆柱的侧面积是16.5平方厘米，底面积是9.5平方厘米，它的表面积是多少平方厘米．
<gadget id="calculator">9.5 * 2</gadget>
<output>19</output>

<gadget id="calculator">16.5 + 19</gadget>
<output>35.5</output>

<result>35.5</result>