For a contest, students have to solve this problem: The length of a rectangle is 6 cm more than its width. The perimeter of the rectangle is 84 cm. What are the dimensions of the rectangle?

a) One student says the dimensions of the rectangle are 39 cm by 45 cm. Is the student correct? How do you know?

b) What is the answer to the contest problem?

  1. 👍 0
  2. 👎 0
  3. 👁 172
  1. The rectangle is definitely not 39 by 45 because those two numbers alone = the perimeter. As for the rectangle call the length (x+6) and the width x. Then say that 84=2(x)+2(x+6). solve for x

    1. 👍 0
    2. 👎 0

Respond to this Question

First Name

Your Response

Similar Questions

  1. Calculus

    A rectangle has area 64 m2. Express the perimeter of the rectangle as a function of the length L of one of its sides. State the domain of P. (Assume the length of the rectangle is larger than its width. Enter your answer using

    asked by Breauna on August 25, 2014
  2. basic geometric

    10. a rectangle has width the same as a side of a square whose perimeter is 20m. the length of the rectangle is 9m. find the perimeter of this rectangle. 34. The width of a rectangular picture is one-half the length. The perimeter

    asked by vero on March 12, 2007
  3. Math

    A norman window is constructed by adjoining a semicircle to the top of an ordinary rectangular window. Find the dimensions of a Norman window with maximum area if the total perimeter is 16 feet. X = the width of the rectangle. Y =

    asked by Tezuka on September 17, 2006
  4. linear-equations-in-one-variable

    the length of a rectangle exceeds its breadth by 4 cm. if length and breadth are each increased by 3 cm, the area of the new rectangle will be 81 cm sqsq morthan that of the given rectangle. find the length and breadth of the

    asked by Anonymous on May 24, 2016
  5. Math - Algebra 2 some1 plz help?

    in a certain math class, each student has a text book, every 2 students share a book of tables, every 3 students share a problem book, and every 4 students share a mathematics dictionary. If the total number of books is 75.. how

    asked by Agnes on December 2, 2006
  1. Algebra

    A golden rectangle has sides of length 1 and x. When a square with side length 1 is removed from the golden rectangle, the remaining rectangle has the same proportions as the original. Solve for x.

    asked by Connie on April 1, 2015
  2. algebra

    The length of a rectangle is 3 more than twice the width. The area of the rectangle is 119 square inches. What are the dimensions of the rectangle? If x = the width of the rectangle, which of the following equations is used in the

    asked by steven on November 21, 2014
  3. Algebra

    1. The length of a rectangle is twice its width. The perimeter of the rectangle is 24 inches. Write a system of equations in 2 variables. Use substitution to solve the problem. A. Equation 1: L = 2W L= 2(4) = 8 Equation 2: 2L + 2W

    asked by X on June 4, 2017
  4. Math

    The local swimming pool is having a contest and all students are welcome to enter. The pool officials want a new logo that has rotational symmetry with 120⁰ and 240⁰ as its angles of rotation. Draw an entry for the contest.

    asked by Amy on February 8, 2018
  5. math

    Solve this problem plz... A rectangle has an area of 288 cm square.if the width is decreased by 1cm and length is increased by 1 cm the area would decreasedby 3 cm square.fin the original dimension of the rectangle.

    asked by Ali on January 20, 2016
  6. Math

    The length of a rectangle is 5 inches less than 3 times the width. The perimeter of the rectangle is 14 inches. Find the length and width of the rectangle. I did this: Length 3x-5; width 3x Then I did guess and check and came up

    asked by Katie on December 5, 2015

You can view more similar questions or ask a new question.