It is known that the length of the wiper blade of a car is 40cm, and the central angle of the wiper swing is 135°, so what is the length of the arc passed by the tip of the wiper blade in cm?
已知汽车的雨刮器的长度为40cm，雨刮器摆动的圆心角为135°，则雨刮器尖端所经过的弧长为多少cm．
<gadget id="calculator">40 / 360</gadget>
<output>1/9 = around 0.111111</output>

<gadget id="calculator">3.14 * 2 * (1/9) * 135</gadget>
<output>94.2</output>

<result>94.2</result>