no need of sqrt, simple easy to understand
\n\n# Code\npython3 []\nclass Solution:\n    def areaOfMaxDiagonal(self, dimensions: List[List[int]]) -> int:\n\n        \n        md=0\n        ma=[]\n        
\n\n# Code\n```python3 []\nclass Solution:\n    def areaOfMaxDiagonal(self, dimensions: List[List[int]]) -> int:\n\n        \n        md=0\n        ma=[]\n        for i, j in dimensions:\n            if i*i +j*j>md:\n                ma=[]\n                md=i*i +j*j\n                ma.append(i*j)\n            elif i*i+j*j==md:\n                ma.append(i*j)\n        ma.sort(reverse=True)\n        return ma[0]\n\n        \n```
['Python3']