- The perimeter of an isosceles triangle is 40 centimeters, and the length ratio of two sides is 1:2. What is the length of the base of this isosceles triangle in centimeters?
-个等腰三角形的周长是40厘米，其中有两条边的长度比1：2，这个等腰三角形的底边长是多少厘米
<gadget id="calculator">2 / 1</gadget>
<output>2</output>

<gadget id="calculator">1 + 2 + 2</gadget>
<output>5</output>

<gadget id="calculator">1 / 5</gadget>
<output>1/5 = around 0.2</output>

<gadget id="calculator">40 * (1/5)</gadget>
<output>8</output>

<result>8</result>