(make sure you're right!)! 1. It is known that the perimeter of the square is C, the side length of the square is (), and the area is () 2. A travels a kilometer per hour, B travels B kilometer per hour (a + b) × 3 denotes () (a-b) × 5 means () 3. Express the following quantitative relationship by equation (1) M is 9 times more than 38 (2) Three fifths (3 / 5) of 100 m is less than 27:1 (3) M is 78:1 more than one tenth (1 / 10) of 372 5. There are 480 pages in a book. After 8 days of reading, Xiao Fang still has 120 pages left. Suppose that he reads page a every day, then () = 120
1. It is known that the perimeter of the square is C, and the side length of the square is (C / 4), and the area is (C ^ 2 / 16) the square of C divided by 162