There are 10 cylindrical pillars in the corridor of the school. The radius of each pillar is 4 decimeters and the height is 2.5 decimeters. To paint these pillars, 0.3 kilograms of paint is used per square meter. How many kilograms of paint are needed in total? ?
学校走廊上有10根圆柱形柱子，每根柱子底面半径是4分米，高是2.5分米，要油漆这些柱子，每平方米用油漆0.3千克，共需要油漆多少千克？？
<gadget id="calculator">10 / 100</gadget>
<output>1/10 = around 0.1</output>

<gadget id="calculator">0.3 * 3.14 * 4 * 2 * 2.5 * (1/10)</gadget>
<output>1.884</output>

<result>1.884</result>