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? (π takes 3.14)
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？(π取3.14)
<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>