Which rectangle has the greatest area? https://cdn.kastatic.org/ka-perseus-graphie/4a8f5c98eec28814ae427cd58b888d751361f1f4.svg https://cdn.kastatic.org/ka-perseus-graphie/63404aafc3fe0991fa81b1cc7a547add305b8907.svg How do we know which rectangle has the greatest area?