Answer
Area of the green parallelogram = 240 square feet
Step-by-step explanation
Area of a parallelogram = base x height
For the first parallelogram
Area = 60 square feet
Step 1: find the base of the first parallelogram
Base = ?
Height = 7.5 ft
60 = 7.5 x b
60 = 7.5b
Divide both sides by 7.5
60/7.5 = 7.5b/7.5
b = 8 ft
The base of the first parallelogram is 8ft
Since, the two parallelogram are similar
Step 2: we need to find the base of the second parallelogram
h1/b1 = h2/b2
7.5 / 8 = 15 / b2
Cross multiply
7.5 x b2 = 15 x 8
7.5b2 = 120
Divide both sides by 7.5
b2 = 120/7.5
b2 = 16 ft
Therefore, the area of the secon parallelogram
Area = b x h
Area = 16 x 15
Area = 240 square feet
Therefore, the area of the green parallelogram is 240 square feet