Here is a circle it knows how to get around, it has a radius from center to rim, and its diameter is a line that goes from side to side while passing through the center, now isn't that simple

[Chorus]
PI R SQUARED SOUNDS LIKE AREA TO ME! WHEN I NEED THE CIRCUMFERENCE ILL JUST USE PI D! PI R SQUARED SOUNDS LIKE AREA TO ME! WHEN I NEED THE CIRCUMFERENCE ILL JUST USE PI D!

Here is a circle it knows how to get around, it has a radius from center to rim, and its diameter is a line that goes from side to side while passing through the center, now isn't that simple

[Chorus]
PI R SQUARED SOUNDS LIKE AREA TO ME! WHEN I NEED THE CIRCUMFERENCE ILL JUST USE PI D! PI R SQUARED SOUNDS LIKE AREA TO ME! WHEN I NEED THE CIRCUMFERENCE ILL JUST USE PI D!