A cylindrical beverage bottle with a height of 10cm and a radius of the bottom of 5cm. A label is pasted on the side of the bottle. What is the area of the label in cm**2.
一个圆柱饮料瓶，高10cm，底面半径5cm，在饮料瓶的侧面贴商标，商标的面积是多少cm**2．
<gadget id="calculator">2 * 3.14 * 5 * 10</gadget>
<output>314</output>

<result>314</result>