Why is my range wrong?

Will mark brainliest! ( explain the answer too, it can be one sentence)

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)?

In the figure, ab = 14 inches, ac= 16 inches,ay=9 inches, and bz = 10 inches find the area of the triangle abc. answer quick