The height of a cylinder is three times the diameter of the base. If the surface area of the cylinder is 395.64 square millimeters, what are the cylinder's radius and height? Use 3.14 for π.

Solving two-step inequalities worksheet

The number of hours per week that the television is turned on is determined for each family in a sample. the mean of the data is 37 hours and the median is 33.2 hours. twenty-four of the families in the sample turned on the television for 22 hours or less for the week. the 13th percentile of the data is 22 hours. approximately how many families are in the sample? round your answer to the nearest integer.

Can someone tell me if this is perpendicular? !