So perimeter is adding all sides
In this picture, you have all sides, so add them up!
(2a-3)+(3a+1)+(2a) = P
So this expression shows that we're adding all sides that gives us the P, or perimeter :)
For 36 3 6 13. For 48 4 8 24. I think there are more but I can't think of them
The answers are: -5.3, -6.5
