Mike is installing weatherstripping around a window that measures 3.5 ft x 4.5 ft. How much weatherstripping will he need?
To calculate the amount of weatherstripping needed, you need to find the perimeter of the window. The formula to calculate the perimeter of a rectangle is P = 2(l + w), where P is the perimeter, l is the length, and w is the width.
P = 2(3.5 + 4.5)
P = 2(8)
P = 16 ft
Therefore, Mike will need 16 ft of weatherstripping.