Answer: 350ft
Step-by-step explanation: Assuming the flag is a rectangle, the perimiter can be found with the formula 2l+2w= P. We already know P, 2140, so we can get the equation 2l+2w=2140. Also, since it is given that the length is 370 greater than the width, we can get the equation
l(length)= 370+w(width)
Next, substitute 370+w into the original equation, since we know 370+w=l
So, we get 2(370+w)+2w=2140. Now that we have a single variable equation, we can easily solve. Distributing 2 to 370 and w and simplifying further, we get
740+4w=2140
4w=1400
w=350
