Are these sentences OK?
(I did the laundry)
some time later, if I say;
The laundry dried.
The laundry is dry.

(I painted the wall etc.)
some time later, if I say;
The paint dried.
The paint is dry.

Question

Are these sentences OK?
(I did the laundry)
some time later, if I say;
The laundry dried.
The laundry is dry.

(I painted the wall etc.)
some time later, if I say;
The paint dried.
The paint is dry.

Answer

If you're not mentioning a specific frame then it is better to say: 
The laundry has dried.
&
The paint has dried.

but if you are mentioning a specific time frame then you can say: 
The laundry dried, two hours ago.
&
The paint dried, yesterday.