A cylinder and a cone have the same base area, and the side view of the cylinder is a square with a side length of 6.28 cm. If the height of the cone is 15 cm, what is its volume in cubic centimeters?
一个圆柱和一个圆锥的底面积相等，圆柱的侧面展开图是边长6.28厘米的正方形．圆锥高15厘米，则它的体积是多少立方厘米．
<gadget id="calculator">6.28 / 2 / 3.14</gadget>
<output>1</output>

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

<gadget id="calculator">1 ** 2</gadget>
<output>1</output>

<gadget id="calculator">(1/3) * 3.14 * 1 * 15</gadget>
<output>15.7</output>

<result>15.7</result>