An isosceles triangle is formed by three wooden sticks of 30 cm and 70 cm. What is the perimeter of this triangle in cm?
用30厘米和70厘米的两种木条共三根围成一个等腰三角形，这个三角形的周长是多少厘米？
<gadget id="calculator">70 * 2</gadget>
<output>140</output>

<gadget id="calculator">140 + 30</gadget>
<output>170</output>

<result>170</result>