The largest American flag ever flown had a perimeter of 1,520 feet and a length of 505 feet. Find th

The largest American flag ever flown had a perimeter of 1,520 feet and a length of 505 feet. Find the width of the flag.

for a rectangle, the Perimeter P is given by:
P = 2l + 2w

Plugging in our numbers for Perimeter and width into our rectangle calculator, we get:
l = 255