It is known that the area of a square is 81 square centimeters, the length of a rectangle B is 5 centimeters less than twice the side length of the square, and the width is 6 centimeters less than its length. What is the area of B in square centimeters?
已知甲正方形的面积是81平方厘米，乙长方形的长比正方形的边长的2倍少5厘米，宽比长少6厘米，乙的面积是多少平方厘米？
<result>92</result>