Question 288802
The Pythagorean Theorem states: a^2 + b^2 = c^2

If the perimeter is 14 and the width is 1, then the length must be 6.

Let a = 6

Let b = 1

We are looking for c.

Here is the set up and you can finish.

(6)^2 + (1)^2 = c^2