SOLUTION: The length of a rectangle is 3 cm more than twice the width. the perimeter is 84cm. Find the length.

Algebra ->  Rectangles -> SOLUTION: The length of a rectangle is 3 cm more than twice the width. the perimeter is 84cm. Find the length.       Log On


   

Question 303477: The length of a rectangle is 3 cm more than twice the width. the perimeter is 84cm. Find the length.
Answer by mananth(16946) About Me  (Show Source):
You can put this solution on YOUR website!
letthewidthbe x
length = 2x+3
perimeter = 2*l+2*W
84= 2x+2(2x+3)
84=2x+4x+6
84=6x+6
78=6x
x=13 which is the width
length = 2*13+3
=29
Ananth