A cylinder of steel has a base radius of 2 cm and a length of 50 cm. What is the volume of this steel in cubic centimeters?
一根圆柱体钢材，它的底面半径是2cm，长50cm，这根钢材体积是多少立方厘米？
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">3.14 * 4 * 50</gadget>
<output>628</output>

<result>628</result>