Question 92131
P=perimeter; A=area; s=side
Because it is a square, all the sides are the same length so you use the following equations:

P = 4s
A = 2s
s = 3 in.

Then, you plug in the numbers and solve:
P = 4(3)
P = 12 in.


A = 2(3)
A = 6 in.