Find the volume of each figure. Round your answers to the nearest tenth, if necessary.
8 mi
10 m
O 266 mi
O 216 mi
O 219 mi
174 mi

Scores on a university exam are normally distributed with a mean of 78 and a standard deviation of 8. the professor teaching the class declares that a score of 70 or higher is required for a grade of at least “c.” using the 68-95-99.7 rule, what percentage of students failed to earn a grade of at least “c”?