Solution: Let the height of parallelogram be X base * height = area 8.2*X=32.8X=32.8/8.2X=4 A: the height of parallelogram is 4m. Solution: There are X people at the stop, and the 25th row is also a row, so there are 7 rows: a * * stop, and 7 solutions: Let the speed of B be X (km \ hour), then the speed of A is 2x (km \ hour),1.5x+1.5× 2x. B) 65438+2.5x+3x =193.54.5x =193.5x = 43, so the speed of B is 43 (km/h), that is, the speed of A is 43 km/h =43×2=86. Solution: Let the width of glass be x cm, then the length of glass is 2. 2 (2.5x+x) =1965x+2x =1967x =196x = 282.5x = 2.5 * 28 = 70 (cm) A: The length of this glass is 70cm.