The diameter of a circle has endpoints at (-4, 2) and (-4,-6). What is the equation of the circle?

Acircular city park has a sidewalk directly through the middle that is 111 - feet long. if each bag of fertilizer covers 50 square feet, then determine how many bags of fertilizers the parks and recreation department needs to use to cover the circular park. ignore all the sidewalks around and through the park.

If 1/√5+1/√5+1=p+q√r , find the values of p, q and r

Factor the expression using the gcf. the expression 21m−49n factored using the gcf