The Width of this rectangle is measured as 19.4 mm correct to 1 decimal place. b)what is the lower bound ofor the area of the rectangle

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)?