The area of parallelogram must be less than 180cm the base is 15

and the height is 12.

To find the area of a parallelogram, we use the formula:

Area = base * height

Plugging in the given values, we get:

Area = 15 * 12
Area = 180 cm²

Since the area of a parallelogram is determined by the base and height, as long as the values for the base and height are correct, the area of the parallelogram can be any value. In this case, the area is 180 cm² which is not less than 180 cm.