A cylindrical bucket with a bottom diameter of 56 cm and a height of 87 cm can hold as much water as cm**3.
一个圆柱形水桶，底面直径是56cm，高87cm，能装多少cm**3的水．
<gadget id="calculator">56 / 2</gadget>
<output>28</output>

<gadget id="calculator">28 ** 2</gadget>
<output>784</output>

<gadget id="calculator">3.14 * 784 * 87</gadget>
<output>214_173.12</output>

<result>214_173.12</result>