SOLUTION: A rectangle is 3 cm longer than it is wide. Find the dimensions of the rectangle if its area is 246 sq-cm. I don't know where to start. Thank you for your help.

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: A rectangle is 3 cm longer than it is wide. Find the dimensions of the rectangle if its area is 246 sq-cm. I don't know where to start. Thank you for your help.      Log On


   

Question 865010: A rectangle is 3 cm longer than it is wide. Find the dimensions of the rectangle if its area is 246 sq-cm.
I don't know where to start. Thank you for your help.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
How to start:
x=width
y=length
y=x+3
AREA, A=246=xy;
x%2A%28x%2B3%29=246
Solve for x and then use it to find the y value.