What was a negative outcome of the civil war?

The American Civil War lasted for just four years, from 1861 ñ 1865 and it is often also known as the War Between the States. It was the event where 11 Southern States that supported Slavery declared their succession from the United States, and announced the Formation of the Confederate States of America.

the answer is

r ≈5.641

plug in the area of 100 yards into the equation

100=

divide each side by pi

≈ 31.8309=

take the square root of each side to find r

=r

r ≈5.641