(2)482; (3)

Test analysis: (1) The center of the circle can be m and n, and the radius at point O can be 30. As shown in the figure, the area surrounded by line segments MN and EF, arc FM and arc EN is ticket area A;

(2) Finding the seat is to find the sum of the areas of triangle EOF, MON and sector FOM, EON. Then you can find the radius of the fan first.

(3) Get BC= first and then BP= to get the result.

(1) as shown in the figure:

(2) from the meaning of the question.

A: There are 482 seats in ticket area A;

(3) BC= from the meaning of the question, then BP=

∴CP=

Comments: Applying mathematical knowledge to solve practical problems is an important content of middle school mathematics. The key to solve this problem lies in establishing a mathematical model on the basis of correctly understanding the meaning of the problem and transforming the actual problem into a mathematical problem.