Question

A rectangle with one dimension n + 2 and the other dimension 2n - 1 . What is the permiter?

Answer 1

A rectangle with one dimension $n + 2$ and the other dimension $2n - 1$. What is the permiter?

The permiter of a rectangle is $P = 2(a + b)$

$$a = n + 2$$ $$b = 2n - 1, \text{ so}$$ $$P = 2(n + 2 + 2n - 1) = 6n + 2$$