A triangular flowerbed, the three side lengths are 25 meters, 35 meters, 20 meters respectively, what is the perimeter of this triangular flowerbed in meters?
一个三角形花圃，三条边长分别是25米、35米、20米，这个三角形花圃的周长是多少米．
<gadget id="calculator">25 + 35 + 20</gadget>
<output>80</output>

<result>80</result>