The length of a rectangle is five times it's width. If the area of the rectangle is 245 ft, find it's perimeter

Answer 1

Step1 Let x = width (because you need the width to find the length.), then the length is 5x.

Step 2 Area = LW so

245 = 5x²

Step 3 Divide each side by 5.

245/5 = 5x²/5

49 = x²

x = 7

Width = 7 ft, Length = 35 ft

Perimeter = 2L + 2W = 2(35) + 2(7) = 70 +14 = 84 ft.