A square has four even sides and the perimeter is equal to the sum of all of the sides.

So we can evaluate the equation for P and then solve for s.
Answer:
I think its the first one but not 100 % sure
Step-by-step explanation:
Answer:
b. 
Step-by-step explanation:
The scale factor is the number by which one must multiply all sides in a triangle such that its sides are the same as another triangle. This only works in similar triangles (triangles where all of the angles between them are congruent or have the same measures).
Answer:
A. 4 ft 2 in.
Step-by-step explanation:
50/12 = 4.1666667. Round up, so 4.1666667 becomes 4.2.