b + h = 14, (1) ("The base and height of a triangle total 14 cm")= 20 (2) "(the area is 20 cm2") =====> b + h = 14, b*h = 40. From this point, you can find the solution mentally and momentarily. There are two sets of solutions: 1) b = 10, h = 4, and 2) b = 4, h = 10.