There is a cone with a base radius of 2 cm and a height of 12 cm. What is the volume of the cone equal to its height and the area of the base of the cylinder in square centimeters?
有一个圆锥的底面半径是2厘米、高12厘米，与它等高等体积和圆柱体的底面积是多少平方厘米．
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">1 / 3</gadget>
<output>1/3 = around 0.333333</output>

<gadget id="calculator">3.14 * 4 * (1/3)</gadget>
<output>4.186667</output>

<result>4.186667</result>