Based on the time spent walking, the degrees of the walking portion is found to be 72°.
A pie chart is 360° and this represents the total sports hours of 50 hours.
The walking portion is therefore:
= Total hours spent on walking / Total sports hours x 360°
Solving gives:
= 10 / 50 x 360°
= 72°
In conclusion, the walking portion is 72°.
Find out more on pie charts at https://brainly.com/question/26103740.