In the concentric circles shown, R represents the radius of the larger circle and r represents the radius of the smaller
circle. Suppose that R 5 8 centimeters and r 5 3 centimeters.
Calculate the area of the shaded region. HELP PLS- FAST ASAP

According to the national center for health statistics, in 1990, 28 % of babies in the united states were born to parents who were not married. throughout the 1990s, this increased by approximately 0.6 % per year. if this trend continues, in which year will 52 % of babies be born out of wedlock? in__52 % of babies will be born out of wedlock