Well, this question is really small. Next.
2 Drawings with the scale of 1: 4000, with a length of 1cm and a width of 0.5 cm, and the actual floor space of A is (800 square meters).
Don't bother-
The sum of three 3 numbers is 180, and the first number is greater than the average 10. The second number is 4 less than the average, and the third number is (54).
The last one, if you complete it all, will give you extra points. Of course, if it is the first one.
Xiao Ming has read 80% of a book, but the ratio of unread pages to total pages is (1: 5).