The problem asks to find the measure of arc $AB$ in degrees. The circle graph shows the results of a survey about how teenagers spend their time online. Arc $AB$ corresponds to the "Videos" section, which is 20% of the circle.

1. Problem Description

The problem asks to find the measure of arc $AB$ in degrees. The circle graph shows the results of a survey about how teenagers spend their time online. Arc $AB$ corresponds to the "Videos" section, which is 20% of the circle.

2. Solution Steps

A full circle has 360 degrees. We need to find 20% of 360 degrees.

To do this, we can use the formula:

$\text{Measure of arc AB} = (\text{Percentage of circle}) \times 360^{\circ}$

In this case, the percentage of the circle corresponding to arc $AB$ is 20%, or 0.

2

0. Therefore,

$\text{Measure of arc AB} = 0.20 \times 360^{\circ}$

$\text{Measure of arc AB} = 72^{\circ}$

3. Final Answer

$m\ \text{arc}\ AB = 72^{\circ}$