How to find the area of a regular figure

Interest begins accruing the date of the transaction except for auto loans mortgages credit card cash advances credit card purchases

A. the following events are mutually exclusive: living in california and watching american idol. true or false b. the number of patients seen by an outpatient practice is an example of a discrete random variable. true or false c.the law of large numbers states that as the number of times an event experiment is conducted increases, the likelihood of the actual probability of an event approaching the theoretical probability decreases. true or false d. measuring the time it takes for patients to enter the operating room is an example of a continuous random variable. true or false

The weight of a rock sample is measured to be 2.5 ponds. what is the percent of error in the measurement?