Please help look at the pic and those are not the answers

Can (3,5 and square root 34) be sides on a right triangle?

Asurvey of 45 teens found that they spent an average of 25.6 hours per week in front of a screen (television, computer, tablet, phone, based on the survey’s sample mean, which value could be the population mean? 2.3 hours 27.4 hours 75.3 hours 41.5 hours

This is about circle theorems. someone asap : (