Given that the area of a triangle is 22.5 square decimeters, what is the area of a square with the same base and height as the triangle?
已知一个三角形的面积是22.5平方分米，则与这个三角形等底等高的正方形的面积是多少．
<gadget id="calculator">22.5 * 2</gadget>
<output>45</output>

<result>45</result>