Answer:
22 units
Step-by-step explanation:
Known Quantities:
Calculations:
Final Calculations:
- perimeter = 2 x (3+8)
- perimeter = 22
Answer:

Step-by-step explanation:
Lets solve the first half.

Second one:

Now compare.....Not the same right??
So your answer is: 
Hope this helps :)
Answer:
SAS Postulate
Two sides and the included angle of one triangle are congruent to two sides and the included angle in a second triangle, then the two triangles are congruent.
X= 9/4 i think i dont know
let's set up an equation:
x-4=9
solve normally:
x=13