Answer:
Jason need to trim is 65 feet
Explanation:
We are given
The room is 14 feet wide and 20 feet long
so, length is 20 feet
![L=20](https://img.qammunity.org/2020/formulas/mathematics/middle-school/pwxmpkq85volury3embr3nng4jfzbzo6ra.png)
width is 14 feet
so,
![W=14](https://img.qammunity.org/2020/formulas/mathematics/middle-school/29wslij5h2nbgpfamlq9rw75tx49c2m4ek.png)
now, we can find perimeter
P=2L+2W
![P=2* 20+2* 14](https://img.qammunity.org/2020/formulas/mathematics/middle-school/7sevndnergf5olhuj4k8s4if32l5c8rmvq.png)
![P=68](https://img.qammunity.org/2020/formulas/mathematics/middle-school/9r862y5ljaf2qhwe50oa5k6jpi27ix37lx.png)
There is a door opening that is 3 feet wide
So, Jason need to trim
=68-3 feet
=65 feet