Answer:
A
Step-by-step explanation:
Hopefully this helps!
All you have to do in order to solve for the length of the square, simply take the expression and divide each term in the equation by 4, since the perimeter equation is the result of the length of the side equation multiplied by 4.
The final solution would be C.

notice the original, and the new one, with the tripled "r" and "h" is just, whatever the original was times 27, namely 27 times as large as the original.
5 consecutive integers can be written like
1. x
2. x+1
3. x+2
4. x+3
5. x+4
sum means add them all up.

combine like terms and solve for x.
remember it is looking for third in the sequence, so add 2 to your answer.
good luck!