Tea in a kettle cools slowly but cools faster in cup

Because in a cup there's nothing but the tea the kettle was on and it's still feeding off of heat

Tea cools faster in a cup than in a kettle because when it is on a cup it is more spread out so the cooler air around it is able to cool down each molecule faster than if it were in a kettle which is cooling down slower because the tea is not a spread out