The length is 18ft and the width is 3ft.
How to get this answer?
The length = 6*W
Perimeter = 42 ft
Formulas:
Perimeter = 2Length + 2Width
42ft = 2L + 2W
We know the length is 6W so replace that with L.
42ft = 2(6W) + 2W
42ft = 12W + 2W
42ft = 14W
W = 3ft
L= W*6 = 3*6 = 18ft
Check it with formula:
P = 2L + 2W
2(18) + 2(6) = 42ft, so it is correct.
