The base of a triangle is 6dm and the height is 4.5dm. What is the area of a parallelogram with the same base and height in dm?
一个三角形的底是6dm，高是4.5dm，与它等底等高的平行四边形的面积是多少dm．
<gadget id="calculator">4.5 / 2</gadget>
<output>2.25</output>

<gadget id="calculator">6 * 2.25 * 2</gadget>
<output>27</output>

<result>27</result>