The circumference of the base of half a cylinder is 10.28 cm and the height is 6 cm. What is its volume in cubic centimeters?
半个圆柱的底面周长是10.28厘米，高6厘米，它的体积是多少立方厘米．
<gadget id="calculator">2 ** 2</gadget>
<output>4</output>

<gadget id="calculator">6 / 2</gadget>
<output>3</output>

<gadget id="calculator">3.14 * 4 * 3</gadget>
<output>37.68</output>

<result>37.68</result>