Find the area of circle b in terms of π.

A= πr^2

So, simplify that.
π1.5^2

Simplify again
π2.25

Once more.
The area of the circle is 7.07 yards.

The first one, i believe, would be correct. all the others have one thing in common, and that's that they have repeating numbers. in the second one, x and y have repeating 6's and 3's, and in the third, x and y have repeating 6's as well. in the last one, there are repeating 3's. the first one has no repeating numbers.