SOLUTION: How do I find h & w when h is 7 more than w, and I am only given the area of 330ft^2?

Question 566791: How do I find h & w when h is 7 more than w, and I am only given the area of 330ft^2?
Found 2 solutions by solver91311, stanbon:
Answer by solver91311(24713) (Show Source): You can put this solution on YOUR website!

You are not "only given the area...", you are also given that is 7 more than .

You also know that the area is given by , so substitute:

And with the given value for area:

Put it in standard form:

Solve the quadratic (it factors, 22 and 15 have a difference of 7, hmmm), discard the negative root. The positive root is and is 7 more than that.

John

My calculator said it, I believe it, that settles it

Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
How do I find h & w when h is 7 more than w, and I am only given the area of 330ft^2?
-------
Let width = w
Then height = (w + 7)
----
Area = width*height = 330 ft^2
-----
w^2+7w-330 = 0
---
Factor:
(w-15)(w+22) = 0
---
Width = 15 ft
Height = 15+7 = 22 ft
===========================
cheers,
Stan H.
==================
RELATED QUESTIONS
I am building a box. I know the area of each side of a rectangular box is 252, 168 and... (answered by solver91311)
Find possible dimensions for a closed box with volume 256 cubic inches, surface area 352... (answered by stanbon)
Find possible dimensions for a closed box with volume 256 cubic inches, surface area 352... (answered by MathLover1)
My problem is to do with the hypotenuse of a certain trig problem. The adjacent is 8.25,... (answered by lwsshak3)
How do I find the perimeter and area of this reactangle:L (3x-7)... (answered by edjones)
The volume of a rectangular solid is 540 cubit feet. The width is 3 feet more than the... (answered by KMST)
the volume of a rectangular box is 240cu units. How do you find the length and width... (answered by ewatrrr)
I am given 2, 3-dimensional rectangles. The dimensions on A are l=4, w=10, h=18. The... (answered by venugopalramana)
The length of an airplane hanger is 4 times its height (h).The width of the hanger is 10... (answered by psbhowmick)