The rain falls on a rectangular flat roof with a length of 15 meters and a width of 6 meters, and then flows into a cylindrical underground water cellar with a diameter of 2 meters. If the rainfall in this area is 60 mm on a certain day, find the water flowing into the cellar What is the height of ? (π takes 3)
雨落在长15米，宽6米的长方形的平顶屋顶上，然后流入到直径为2米的圆柱形地下水窖里，如果该地区某天的降雨量为60毫米，求流入水窖的水的高度是多少？(π取3)
<gadget id="calculator">15 * 6 * 0.06</gadget>
<output>5.4</output>

<gadget id="calculator">2 / 2</gadget>
<output>1</output>

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">3 * 1</gadget>
<output>3</output>

<gadget id="calculator">5.4 / 3</gadget>
<output>1.8</output>

<result>1.8</result>