Question

The leanth of a rectangle is 5 centimeters less than twice its width. The perimter of the rectangle is 26cm.What are the dimensions?

Answer 1

Length = 2*width - 5
l = 2w - 5

And we given is: perimeter of rectangle = 2*(length + width) = 26

Thus,
2(l+w) = 26
l+w = 13

2w-5 + w = 13 [ because l = 2w - 5 ]
3w = 18
thus, w = 6

Now get the value of l = 2*w - 5 from w's value.

Understood? :)

Answer 2

so the length would be 11 right ??

Answer 3

I meant to say 7

Answer 4

correct. :D