triangle and a parallelogram have the same area and the same height. It is known that the base of the parallelogram is 14 cm. What is the base of the triangle in cm?
一个三角形和一个平行四边形的面积相等，高也相等，已知平行四边形的底是14cm，那么三角形的底是多少cm
<gadget id="calculator">14 * 2</gadget>
<output>28</output>

<result>28</result>