Gaelic football is played with a ball with a radius of 5 inches. What is the surface area of the ball used in Gaelic football? (Use 3.14 for π.)

How do you find p(a and b) if a and b are independent events for two or more actions, such as tossing a coin twice and finding p(heads and heads)? 2. how do you find p(a or b) if a and b are independent events for one action, such as spinning a four-color spinner once and finding p(red or blue)?