The arc length of a circular arc is 28.26 decimeters, the radius is 15 decimeters, what is the central angle in degrees? (π takes 3.14)
一段圆弧的弧长是28.26分米，半径是15分米，圆心角为多少度．(π取3.14)
<gadget id="calculator">180 * 28.26</gadget>
<output>5_086.8</output>

<gadget id="calculator">3.14 * 15</gadget>
<output>47.1</output>

<gadget id="calculator">5_086.8 / 47.1</gadget>
<output>108</output>

<result>108</result>