A basketball court is a rectangle with a length of 28 meters and a width of 15 meters. What is the perimeter of the basketball court in meters?
一个篮球场是一个长28米、宽15米的长方形，这个篮球场的周长是多少米．
<gadget id="calculator">28 + 15</gadget>
<output>43</output>

<gadget id="calculator">43 * 2</gadget>
<output>86</output>

<result>86</result>