the length of a rectangle is 3 times the width, and the perimeter is 22. find the demensions of the rectangle

length = l = 8.25

width = w = 2.75

Step-by-step explanation:

let

width of rectangle = w

Length of rectangle = l = 3*w

perimeter = 22

P=2 (l + w)

22 = 2 (w + 3*w)

22 = 8*w

l = 22/8

width = w = 2.75

l = 3*w = 3*2.75 = 8.25

length = l = 8.25