Problema Solution
The length of a rectangle is six times its width. If the perimeter of the rectangle is 140m,find its area.
Answer provided by our tutors
length = 6w
width = w
perimeter = 2*length + 2*2width = 140
2(6w) + 2(w) = 140
12w + 2w = 140
14w = 140
w = 10
therefore the width is 10 m
length = 6*w = 6*10 = 60 m
area = length*width = 10*60 = 600 m2