A rectangular parallelepiped ventilation pipe (without top and bottom), the cross-section is a square with a side length of 0.35 meters, and the length of the ventilation pipe is 1.8 meters. How many kilograms do you need?
一节长方体通风管(无上、下面)，横截面是一个边长为0.35米的正方形，通风管长1.8米，如果每平方米和油漆0.6千克，那么给这节通风管的外部涂油漆共需要多少千克？
<gadget id="calculator">0.35 * 1.8 * 4 * 0.6</gadget>
<output>1.512</output>

<result>1.512</result>