The base and height of the parallelogram increase by 1 / 3, and the area of the parallelogram increases by several parts

The base and height of the parallelogram increase by 1 / 3, and the area of the parallelogram increases by several parts

Yu Shao 0,
（1＋1/3）×（1＋1/3）－1×1＝7/9

A parallelogram has a base of 4 / 5 meters and a height of 1 / 2. The area of this parallelogram is ()

2 / 5 M2

The height of the parallelogram increases by 2cm and the bottom decreases by 2cm. The area of the new parallelogram is larger than that of the original parallelogram______ ．

Let the base of the original parallelogram be x and the height be H. so: s original = x × H & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; s new = (X-2) × (H + 2) = XH + 2x-2h-4 & nbsp; & nbsp; s new-s original = 2x-2h-4 & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; & nbsp; so