If the base radius and height of a cylinder are both 10 cm, what is the surface area of the cylinder in square decimeters?
用一个圆柱底面半径和高都是10cm，这个圆柱的表面积是多少平方分米．
<gadget id="calculator">2 * 3.14 * 10 * 10</gadget>
<output>628</output>

<gadget id="calculator">10 ** 2</gadget>
<output>100</output>

<gadget id="calculator">3.14 * 100 * 2</gadget>
<output>628</output>

<gadget id="calculator">628 + 628</gadget>
<output>1_256</output>

<result>1_256</result>