The length of a rectangle is six times its width. If the perimeter of the rectangle is 126 in, find its length and width.​

Length = 54 inches and width = 9 inches.

Step-by-step explanation:

Let the width be x in , then the length is 6x in.

So 2*x + 2*6x  126

14x = 126

x = 9 in.

So L = 6*9 = 54 in, and W = 9 in.

Step-by-step explanation:

Perimeter = 2l + 2w

but;

Perimeter = 126

lenght = 6w ( let the width be the variable w)

126 = 2(6w) + 2(w)

126 = 12w + 2w

126 = 14w

126/14 =w

w = 9

Therefore width is 9

and length = 6× 9 = 54

first one because it can't have a fraction in it

step-by-step explanation:

the first option is the answer.