A cylindrical warehouse with a diameter of 10 meters. If all the parts below 1 meter from the ground are painted with waterproof paint, what is the area to be painted?
一个圆柱形的仓库，直径10米．如果把距离地面1米以下的部分全部刷上防水涂料，要粉刷的面积是多少？
<gadget id="calculator">3.14 * 10 * 1</gadget>
<output>31.4</output>

<result>31.4</result>