If one side of a square measures 6 units what is it its area ?

Geometry. i need step by step explanation on how to do each problem.

1. the following set of data represents the number of waiting times in minutes from a random sample of 30 customers waiting for service at a department store. 4 5 7 10 11 11 12 12 13 15 15 17 17 17 17 17 18 20 20 21 22 22 23 24 25 27 27 31 31 32 a. determine the number of classes and class interval.

Issof claims that the scale factor is 1/2. which statement about his claim is correct