Length and width

The length of a rectangle is 7 cm more than the width. Find the width and length if the perimeter of the rectangle is 78 cm.

Correct answer:

w =  16 cm
l =  23 cm

Step-by-step explanation:

l=7+w 78=2 l+2 w  lw=7 2l+2w=78  Pivot:Row1Row2 2l+2w=78 lw=7  Row221 Row1Row2 2l+2w=78 2w=32  w=232=16 l=2782w=2782 16=23  l=23 w=16=16 cm



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







Tips for related online calculators
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: