The perimeter of an equilateral triangle is 15 cm, what is the length of each side?
一个等边三角形的周长是15cm，它的每条边是多少米．
<gadget id="calculator">15 / 3 / 100</gadget>
<output>1/20 = around 0.05</output>

<result>1/20 = around 0.05</result>