How do you find the width of a number when you have the feet and total area

Total area = length x width

so to find the width when you have the total area and the length:

width = total area

length

Area=legnth times width

so if you know the area then solve for width

area=legnth times width

divide both sdies by legnth

area/legnth=width

if you have the legnth then you can solve

area divided by legnth=width