The length

The length of a rectangle is 6 meters, less than twice the width. If the area of the rectangle is 216 meters, find the rectangle's dimensions.

Correct answer:

a =  18 m
b =  12 m

Step-by-step explanation:

a = 2b 6 S = ab = 216  m2  a(a+6)/2=216  0.5a2+3a216=0  p=0.5;q=3;r=216 D=q24pr=3240.5(216)=441 D>0  a1,2=2pq±D=13±441=3±211 a1,2=3±21 a1=18 a2=24  a=a1=18=18 m

Our quadratic equation calculator calculates it.

b=(a+6)/2=(18+6)/2=12 m



Did you find an error or inaccuracy? Feel free to write us. Thank you!







Tips for related online calculators
Are you looking for help with calculating roots of a quadratic equation?
Do you have a linear equation or system of equations and looking for its solution? Or do you have a quadratic equation?

You need to know the following knowledge to solve this word math problem:


 
We encourage you to watch this tutorial video on this math problem: video1

Related math problems and questions: