Final answer:
Paulette will need 154 inches of chalk to cover the perimeter of a window that is 45 inches long and 32 inches wide. The perimeter is calculated by the formula P = 2(L + W).
Step-by-step explanation:
To determine how many inches Paulette will need to chalk around a window, we need to calculate the perimeter of the rectangular window. The perimeter of a rectangle is found by adding together the lengths of all four sides. Since the window is 45 inches long and 32 inches wide, the perimeter P would be calculated as follows:
P = 2(L + W)
Substituting the given lengths, we get:
P = 2(45 inches + 32 inches)
P = 2(77 inches)
P = 154 inches
Therefore, Paulette will need 154 inches of chalk to go around the window.