I tried to do I really did but got stuck help pls

Can you me find the missing length. i attached an image.

Cody was 165cm tall on the first day of school this year, which was 10% taller than he was on the first day of school last year.

Liz is shipping a package to her friend. the maximum weight of a medium flat-rate box is 20 pounds, including the box which weighs 6 ounces. write and solve an inequality to describe the possible weight in pounds, w, of the contents that liz will ship to her friend if she must use a medium flat-rate box. use the drop-down menus to explain your answer.