取圆周率为3.1415926，分别输入半径为40和928.335，求圆面积，要求各数据按域宽10位输出，先输出圆周率和半径，再输出其面积-3.1415926 circumference was taken, and receives a radius of 40 and 928.335, of circular area, requiring the data output by the field width 10, the first output pi and the radius, and then output the area