If the outer tire of a bicycle has a diameter of 60 cm and rotates 100 times per minute, how many kilometers per hour will it travel?
一辆自行车外轮胎的直径是60厘米，每分钟转100周，每小时行驶多少千米？
<gadget id="calculator">60 / 100_000</gadget>
<output>3/5_000 = around 0.0006</output>

<gadget id="calculator">3.14 * 1 * 60 * 100 * 1 * (3/5_000)</gadget>
<output>11.304</output>

<result>11.304</result>