Which numbers are irrational

Arectangular garden is 5 feet long and 3 feet wide. a second rectangular garden has dimensions that are double the dimensions of the first garden. what is the percent of change in perimeter from the first garden to the second garden?

9is the geometric mean between x and 12

Find the tenth term in the following geometric sequence. 8, 4, 2, 1, . .a) 13b) 0.0078c) 0.0156d) 12.5