Afarmer is putting up a fence for her animals. she orginally had the fence enclosing a square was 18ft by 18ft. suppose she uses the same amount of fencing to enclose a circular area. what is the area of the circle?

First look: More than 324 square feet :)
Now, which means that . But l is the original perimeter, 4 times the side of the square, that is, 72 ft. So,
Now, the area of that circle is , which is about 412.5 square feet. It's true, that's more (that's the most you can actually get with that amount of fence :) )

Well if you have 20 bats you probably want 20 balls? you don’t have enough context to answer the question.