Use the three steps to solve the problem. The length of a rectangle is 3 times the width, and the perimeter is 22. Find the dimensions of the rectangle. {Width is 8.25 a0, Length is 2.75 a1}
Accepted Solution
A:
If you recall, the perimeter of a rectangle is equal to 2 times the length, plus 2 times the width.
P=2l + 2w
It would be hard to solve for two variables in this problem, but you are given that the length is equal to 3 times the width.
l=3w
We can substitute this into the original equation so that we’re only looking for “w”.