The perimeter is twice the sum of the length and the width:

The area is the product of the dimensions:

So, the system is

Answer:
6.93 cm
Step-by-step explanation:
You have a right triangle (90°), so you do as follow:
If I understand correctly, you are looking for the hypotenuse so

That is equal to 
Answer:I think it's the second answer
Step-by-step explanation:
Add up all the numbers on the outside of the house to get your answer.
Answer: j=t^2+5
Step-by-step explanation: