The circumference of the base of a cylinder is 12.56 meters and the height is 8 meters. What is the surface area of the cylinder in square meters?
一个圆柱的底面周长是12.56米，高是8米，这个圆柱的表面积是多少平方米．
<gadget id="calculator">12.56 * 8</gadget>
<output>100.48</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">100.48 + 25.12</gadget>
<output>125.6</output>

<result>125.6</result>