Answer:
Option D
Explanation:
Height = Area/ base
Height = 300 cm² / 20 cm
Height = 15 cm
The area of a parallelogram is base times height because it can be rearranged into a rectangle with the same area.
We can also check our answer by plug the value in the formula A = b x h
A = 20 cm x 15 cm
A = 300 cm²