There are 5 cylinders on both sides of the school corridor, the radius of the base is 2 decimeters, and the height is 3 meters. To repaint these posts, what is the painted area?
学校走廊两边各有5根圆柱，底面半径是2分米，高是3米．重新油漆这些柱子，油漆面积是多少？
<gadget id="calculator">2 * 3.14 * 3 * 5</gadget>
<output>94.2</output>

<result>94.2</result>