If the area of a triangle is S square centimeters and the height is 4 centimeters, what is its base in centimeters?
一个三角形的面积是S平方厘米，高是4厘米，则它的底是多少厘米．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<result>1/2 = around 0.5</result>