Help me with this question

Draw a scaled copy of the circle using a scale factor of 2

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

Which diagram best shows how fraction bars can be used to evaluate 1/2 divided by 1/4?