189,242 views
3 votes
3 votes
The perimeter of a rectangular rug is 40 ft. It's length is 12 ft. What is it's width?8 feet28 feet10 feet20 feet

User Lawrence Cherone
by
2.6k points

1 Answer

24 votes
24 votes

The perimeter of a rectangle is the sum of the side lengths. Let a be the length of the missing side:Unle

The perimeter is equal to:


a+a+12ft+12ft=40ft

Solve for a:


\begin{gathered} \Rightarrow2a+24ft=40ft \\ \Rightarrow2a=40ft-24ft \\ \Rightarrow2a=16ft \\ \Rightarrow a=8ft \end{gathered}

Therefore, the width of the rectangular rug is:


8ft

The perimeter of a rectangular rug is 40 ft. It's length is 12 ft. What is it's width-example-1
User Litbear
by
2.5k points