Doing test corrections that are due tomorrow morning and i have no idea how to do them.

Area of parallelogram = Base * Height = 75 square inches.

Since Height = 3 * Base, 3 * Base^2 = 75 square inches.

That means Base^2 = 25. Since distance can't be negative, Base = 5.

Hence, Base = 5 inches, Height = 15 inches.