The lateral area of a cylinder is 25.12 square centimeters, and its height is equal to the radius of the base. Find the surface area of the cylinder.
一个圆柱的侧面积是25.12平方厘米，它的高与底面半径相等，求这个圆柱的表面积．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">2 * (1/2) * 12.56</gadget>
<output>12.56</output>

<gadget id="calculator">12.56 + 12.56</gadget>
<output>25.12</output>

<result>25.12</result>