The circumference of a circular track is 400. find its radius

The circumference of a circle is 5 pi cm. what is the area of the circle?

Add the fractions, and simply the result to lowest terms. 2/3 + 2/7= ?

The owners of four companies competing for a contract are shown in the table below. if a report is released that advocates company b, which of the people having funded the report should result in the most skepticism? company owner of company company a jake adams company b company c company d debby smith henry rose rhonda baker o a. jake adams o b. rhonda baker o c. debby smith o d. henry rose