SOLUTION: i dont know how to find the perimeter of a rectangle with the long side 2w + 3 and the short side w. the rectangle has 4 90 degree angles. thanks!!

Question 746554: i dont know how to find the perimeter of a rectangle with the long side 2w + 3 and the short side w. the rectangle has 4 90 degree angles.
thanks!!
Found 2 solutions by rothauserc, solver91311:
Answer by rothauserc(4718) (Show Source): You can put this solution on YOUR website!
The following is the stated problem
i dont know how to find the perimeter of a rectangle with the long side 2w + 3 and the short side w. the rectangle has 4 90 degree angles.
The perimeter (P) of a rectangle is twice the length(l) plus twice the width(w).
We have l = 2w+3, therefore
P = 2(2w+3) + 2w
P = 4w+6+2w = 6w+6 = 6(w+1)

Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

If you are expecting to assign a specific number to the value of the perimeter of your rectangle, you are doomed to disappointment. The best you can do is create an expression in that represents your perimeter. The perimeter of a rectangle is two times the length plus two times the width, thus:

But since you know that , you can substitute and so define the perimeter as a function of the width:

You will need to simplify the expression yourself. And, just as an 'oh by the way', it darned well better have four right angles, otherwise you had better stop calling it a rectangle.

John

Egw to Beta kai to Sigma
My calculator said it, I believe it, that settles it

RELATED QUESTIONS
I have a rectangle with a perimeter equal to 16cm. I have to determine the value of x.... (answered by ankor@dixie-net.com)
the length of a rectangle is three cm longer than twice the width and that the perimeter... (answered by richwmiller)
I actually dont know if this is a geometry question but it has rectangles, perimeter, and (answered by josgarithmetic,MathTherapy)
find a polynomial for the perimeter and area of a rectangle when the long side is d+7 and (answered by mananth)
Find the polynomial for the perimeter and for the area (of a rectangle of which the long... (answered by kingme18)
The area of a rectangle is 7 , and its diagonal is √50 . Find its dimensions and... (answered by josgarithmetic)
Find the length of each side of the rectangle so that it has the given perimeter Long... (answered by sarah_adam)
the short side of the rectangle is 10cm how do you find the long side of the rectangle??? (answered by solver91311)
The golden ratio was used in ancient Greek architecture. The sides of a rectangle are in... (answered by ankor@dixie-net.com)