the width of a rectangle is 6 1/2 inches. the length of the rectangle is twice the width. what is the perimeter of the rectangle

Question

i dont understand 

Answer 1

w = 6 1/2

L = 2(6 1/2) = 2(13/2) = 13

 

Perimeter = 2(L+w) = 2(13 + 6 1/2) = 2 (19 1/2) = 2(39/2) = 39 inches