Firstly, draw the height of parallelogram respectively, and then measure the bottom and height of each parallelogram. It is found that the base and height of the first parallelogram are 2cm, and the base and height of the second parallelogram are 1.6cm and 2.6cm respectively.

2×2=4 square centimeters

1.6×2.6=4. 16 (square centimeter)