The center circle of a soccer field prohibits a defender from being near the ball at the start or restart of a soccer game. on a professional soccer field this circle is 20 yards in diameter. find the area of this circle. show work or explain how you found your answer.

At the "no mutants allowed" country farm, every sheep has 4 legs, every chicken has two legs, and all animals have only 1 head. asked to count how many sheep and chicken are in the fields, a farm boy reports back that there are 140 feet and 50 heads. how many sheep and chicken are there? there are sheep and chicken at the farm.