一个侧面贴有商标纸的罐头盒，底面半径是8厘米，高是10厘米，商标纸的面积是多少平方厘米？（接头处不计）

Questions 1 to 5 are based on an interview with a chief-editor. At the end of the interview you will be given 10 seconds to answer each of the following questions.
Now listen to the interview.

When asked what a manager’s role is, Mr. Pitt sounds ______.

A．confident

B．hesitant

C．resolute

D．doubtful