If the base area of a cylinder is 12.56 square centimeters and the side area is 62.8 square centimeters, what is its surface area in square centimeters?
一个圆柱的底面积是12.56平方厘米，侧面积是62.8平方厘米，它的表面积是多少平方厘米．
<gadget id="calculator">12.56 * 2</gadget>
<output>25.12</output>

<gadget id="calculator">62.8 + 25.12</gadget>
<output>87.92</output>

<result>87.92</result>