
Jon S. answered 04/17/20
Patient and Knowledgeable Math and English Tutor
w = width
2w = length (twice width)
perimeter = 2*length + 2*width
perimeter = 2*(2w) + 2*w = 240
4*w + 2*w = 240
6w = 240
w = 40
So the width = 40 feet and the length = 2w = 80 feet
The area = length * width = 40 * 80 = 3200 square feet