Answer:
As below
Step-by-step explanation:
the perimeter of our rectangle is 42 meters
and Length is 2 times the width. that is L= 2W
since there are 2 of the Length and Width sides..
42 = 2(L) +2(W)
42= 2(2W) + 2W
42 = 4W + 2W
42 = 6W
W = 42/6
W = 7
now that we know W plug it into our 1st equation
L = 2 (7)
L = 14
Length = 14
width = 7
:)
