The area of a parallelogram is 10 square decimeters, and the length of all heights is 2 It's in ten minutes Write down the formula~

The area of a parallelogram is 10 square decimeters, and the length of all heights is 2 It's in ten minutes Write down the formula~

10 / 2.5 = 4 decimeters
4x4 = 16 decimeters

The perimeter of a parallelogram is 18 decimeters, and the heights on both sides are 2 decimeters and 3 decimeters. How many square decimeters is the area of this parallelogram?
It's better not to be an equation

Because the area of parallelogram = base * height
So the side length ratio of the two heights is 3:2
The corresponding edge of height 2 is: 9 * 3 / 5 = 5.4
Area of parallelogram: 2 * 5.4 = 10.8 square decimeters