(20 1 1? Jinhua) China Tourism Day (May 19), the tourism department of our city conducted a sample survey of Jinhua tourism time in the first quarter of 201/KLOC-0.

According to the relevant data, first calculate the percentage of people who travel in "2 ~ 3 days" to the total population, and then calculate the degree of the central angle of each part. The formula is: the degree of the fan-shaped central angle of each part = the percentage of each part in the total population × 360.

Solution: According to the meaning of the question, 40% of the total travel time is "2 ~ 3 days".

The central angle is 360× 40% = 144.

So the answer is: 144.

This topic examines the fan-shaped statistical chart and related calculations. In the fan-shaped statistical chart, the percentage of each part in the total part is equal to the ratio of the degree of the central angle of the sector corresponding to this part to 360. The degree of the fan-shaped central angle of each part = the percentage of this part in the total × 360.