Question

The width of a rectangle measures (8u - 2v) centimeters, and its length meas(5u +9v) centimeters. Which expression represents the perimeter, in centimof the rectangle?

Answer 1

The perimeter of a rectangle is given by two times the length plus two times the width, so we have:

`\begin{gathered} P=2L+2W\\ \\ P=2(5u+9v)+2(8u-2v)\\ \\ P=10u+18v+16u-4v\\ \\ P=26u+14v \end{gathered}`

Therefore the perimeter's expression is 26u + 14v