A cylinder-shaped gasoline barrel has a radius of 5dm and a height of 10dm. How many liters of gasoline can this barrel hold?
一个圆柱形的汽油桶，量得它内部的底面半径是5dm，高是10dm，这只油桶最多可以装汽油多少升？
<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25 * 10</gadget>
<output>785</output>

<result>785</result>