Python - one line
Code\n\nclass Solution:\n    def areaOfMaxDiagonal(self, d):\n        return mul(*max(d, key = lambda x: (x[0]**2 + x[1]**2, x[0] * x[1])))        \n
# Code\n```\nclass Solution:\n    def areaOfMaxDiagonal(self, d):\n        return mul(*max(d, key = lambda x: (x[0]**2 + x[1]**2, x[0] * x[1])))        \n```
['Math', 'Python', 'Python3']