A parallelogram is formed by combining two triangles of the same shape and size. The base of the assembled parallelogram is 6cm and the height is 5dm. What is the area of one of the triangles dm**2.
用两个形状、大小完全一样的三角形拼成了一个平行四边形．拼成的平行四边形的底是6cm，高是5dm．其中一个三角形的面积是多少dm**2．
<gadget id="calculator">6 / 10</gadget>
<output>3/5 = around 0.6</output>

<gadget id="calculator">5 / 2</gadget>
<output>5/2 = around 2.5</output>

<gadget id="calculator">(3/5) * (5/2)</gadget>
<output>3/2 = around 1.5</output>

<result>3/2 = around 1.5</result>