A cylindrical petrol barrel has a base radius of 5 decimeters measured from the inside and a depth of 6 decimeters. If each liter of gasoline weighs 0.75 kg. How many kilograms of gasoline can this gasoline barrel hold?
一个圆柱形汽油桶，从内部量得它的底面半径是5分米，深6分米．如果每升汽油重0.75千克．这个汽油桶可装汽油多少千克？
<gadget id="calculator">5 ** 2</gadget>
<output>25</output>

<gadget id="calculator">3.14 * 25 * 6</gadget>
<output>471</output>

<gadget id="calculator">471 * 0.75</gadget>
<output>353.25</output>

<result>353.25</result>