The answer is C just guessed and i got it right.
Answer:
Option C is correct
76 feet
Step-by-step explanation:
Area of square(A) is given by:

where, s is the side of the square.
As per the statement:
A square ceiling has an area of 360 square feet.
⇒A = 360 square feet.
then;

⇒
Perimeter(P) of square is given by:

then;

Therefore, 76 feet molding does he need.
3 months, 96 plus 78x3 = 330 (78x3=234+96) 110X3=330 meaning it is 3 months