The circumference of a cone is 12.56 cm and the height is 15 cm. What is its volume in cubic centimeters?
一个圆锥底面周长12.56厘米，高15厘米，它的体积是多少立方厘米．
<gadget id="calculator">12.56 / 3.14 / 2</gadget>
<output>2</output>

<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 * 15 * (1/3)</gadget>
<output>62.8</output>

<result>62.8</result>