Use two rectangular pieces of paper and one square piece of paper to form a new large square piece of paper. The areas of the two rectangular pieces of paper are 44 square centimeters and 28 square centimeters respectively. What is the area of the square piece of paper in square centimetres?
用两块长方形纸片和一块正方形纸片围成一个新的大正方形纸片，两块长方形纸片的面积分别是44平方厘米和28平方厘米．那么正方形纸片的面积是多少平方厘米．
<gadget id="calculator">44 / 4</gadget>
<output>11</output>

<gadget id="calculator">11 - 4</gadget>
<output>7</output>

<gadget id="calculator">7 * 7</gadget>
<output>49</output>

<result>49</result>