To paint four cylindrical corridor pillars with a height of 4 meters and a circumference of 1.25 meters, how many square meters is the area to be painted?
要油漆四根高为4米，底面周长为1.25米的圆柱体走廊柱子，要油漆的面积是多少平方米？
<gadget id="calculator">1.25 * 4 * 4</gadget>
<output>20</output>

<result>20</result>