If the lateral area of a cylinder is 200 square centimeters and the diameter of the base is 6 centimeters, what is the surface area of the cylinder in square centimeters?
一个圆柱的侧面积是200平方厘米，底面直径是6厘米，这个圆柱的表面积是多少平方厘米．
<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3 ** 2</gadget>
<output>9</output>

<gadget id="calculator">3.14 * 9 * 2</gadget>
<output>56.52</output>

<gadget id="calculator">56.52 + 200</gadget>
<output>256.52</output>

<result>256.52</result>