Java: Shapes project - what's the difference in a formula?

Question

I'm doing the Shapes Project in Java and I've noticed that one of the Tests fails.

My first code contained
public class Circle extends Shape{
Circle (int y) {
this.width = y;
}
void area(){
System.out.println(Math.PI*width*width);
}
}

After reflecting on my long lost high school maths, I thought that this code could solve that:
public class Circle extends Shape{
Circle (int y) {
this.width = y;
}
void area(){
int r = width*width;
System.out.println(Math.PI*r);
}
}

Both pass Tests 1, 2 & 4. The first code fails Test 5, the second code fails Test 3.

What am I missing?

Answer 1

What does your Square class look like?
Can you please put your complete code on playground and attach it here?

edit:
sometimes re-running the code helps if sololearn is buggy

Answer 2

Your edit rings true. After posting this, I re-ran the code and it all turned green.

Answer 3

Happens sometimes :)