triangle and a parallelogram have the same area and the same height. It is known that the base of the parallelogram is 1.6 decimeters, how many decimeters is the base of the triangle.
一个三角形与一个平行四边形面积相等，高也相等．已知平行四边形的底是1.6分米，三角形的底是多少分米．
<gadget id="calculator">1.6 * 2</gadget>
<output>3.2</output>

<result>3.2</result>