SOLUTION: The area of a rectangle is 84 square inches. If the length is 3 times the width then find the dimensions of the rectangle. Round answer to nearest hundredth.

Algebra ->  Quadratic Equations and Parabolas  -> Quadratic Equations Lessons  -> Quadratic Equation Lesson -> SOLUTION: The area of a rectangle is 84 square inches. If the length is 3 times the width then find the dimensions of the rectangle. Round answer to nearest hundredth.      Log On


   

Question 1077433: The area of a rectangle is 84 square inches. If the length is 3 times the width then find the dimensions of the rectangle. Round answer to nearest hundredth.
Answer by josgarithmetic(39617) About Me  (Show Source):
You can put this solution on YOUR website!
x%283x%29=84

x%5E2=84%2F3
x%5E2=28
x=2sqrt%287%29----------WIDTH

LENGTH: 6sqrt%287%29