Does the answer to circumference have squared on it?

Answer 1

No. Circumference is just a length. Lengths and distances don't use 'squared' units.

Length is how far you have to go to get from one place to another.

Areas use squared units, like the area of a big piece of paper, or your front yard,

or the floor in your bedroom. Area is how much space there is on something ...

like space that you might have to paint.

Volumes use cubed units, like the volume of a milk jug, or a big cardboard carton,

or the gas tank in your car. Volume is how much space there is inside of something ...

like space that you could keep water in.