A cylindrical bucket without a lid has a base diameter of 2 decimeters and a height of 5 decimeters. If 1 liter of water weighs 1 kg, how much water can this bucket hold?
一种无盖的圆柱形水桶，底面直径是2分米，高是5分米．如果1升水重1千克，这种桶可以装水多少千克？
<gadget id="calculator">2 / 2</gadget>
<output>1</output>

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

<gadget id="calculator">3.14 * 1 * 5 * 1</gadget>
<output>15.7</output>

<result>15.7</result>