The sides of a triangle are given by the lines........find the area of this triangle

**The sides of a triangle are given by the lines:**

2x - y + 3 = 0

x - 2y - 3 = 0

and 2x + y - 11 = 0

Find the area of this triangle.

Now something that I'm sure of is that this triangle is NOT a right angled triangle.

What I'm not sure of is how I did the question. First I found the x and y intercepts of all equations by saying x = 0, y = ? and when y = 0, x = ?

But a lot of people have told me to solve the lines together yet my tutor told me to do it the way I did so I'm not sure if I'm doing it right or not. I hope you guys understand me coz i guess I'm not making much sense right now anyway can someone help me out and I know I'm supposed to use some perpindicular distance forumla but I forgot how to use it. I would appreciate it if someone could help me out thanks :)