triangle and a parallelogram have the same area and height. The base of the triangle is 4m. What is the base of the parallelogram in m?
一个三角形和一个平行四边形的面积和高都相等，三角形的底是4m，平行四边形的底是多少m．
<gadget id="calculator">1 / 2</gadget>
<output>1/2 = around 0.5</output>

<gadget id="calculator">4 * (1/2)</gadget>
<output>2</output>

<result>2</result>