Melt and cast a piece of cylindrical steel with a base circumference of 6.28 cm and a height of 6 cm to form a cone. The area of the base of this cone is 15 cm2. What is its height in cm?
把一段底面周长6.28厘米，高6厘米圆柱形钢材，熔铸成一圆锥体，这个圆锥底面积是15平方厘米，它的高是多少厘米？
<gadget id="calculator">6.28 / 3.14 / 2</gadget>
<output>1</output>

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

<gadget id="calculator">3 / 15</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">3.14 * 1 * 6 * (1/5)</gadget>
<output>3.768</output>

<result>3.768</result>