The length of a rectangle is 3 times the width. The perimeter is 48 centimeters. What is the area?
1 Answer
Aug 11, 2017
Explanation:
So, the perimeter of any rectangle is given by adding the length twice and the width twice:
In our particular case the length is 3 times the width:
Substituting that, and the 48 centimeters we know the perimeter to be into the first equation, we get:
So, if the width is 6, the length is:
Now, the area of any rectangle is given by multiplying the length and the width:
In our case
Also, remember to "multiply" the units. In this case centimeter times centimeter gives us centimete
So the area is