The area, A, of a circular ring with outer radius R and inner radius r is given by the formula A= pi(P2 – 2), Find the area of a circular ring with outer radius R = 10 cm
and inner radius r
= 5 cm, Give the answer rounded to the nearest one hundredth
square centimeter, cm^2.

Exclude leap years from the following calculations. (a) compute the probability that a randomly selected person does not have a birthday on october 4. (type an integer or a decimal rounded to three decimal places as needed.) (b) compute the probability that a randomly selected person does not have a birthday on the 1st day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (c) compute the probability that a randomly selected person does not have a birthday on the 30th day of a month. (type an integer or a decimal rounded to three decimal places as needed.) (d) compute the probability that a randomly selected person was not born in january. (type an integer or a decimal rounded to three decimal places as needed.)