Mike is installing weatherstripping around a window that measures 3.5 ft x 4.5 ft. How much weatherstripping will he need?

To find the amount of weatherstripping Mike will need, we need to find the perimeter of the window.

Perimeter of the window = 2 * (Length + Width)
= 2 * (3.5 ft + 4.5 ft)
= 2 * 8 ft
= 16 ft

Therefore, Mike will need 16 ft of weatherstripping.

To determine the amount of weatherstripping needed, you will need to calculate the perimeter of the window. The perimeter of a rectangle is given by the formula:

Perimeter = 2 * (Length + Width)

Given that the length of the window is 3.5 ft and the width is 4.5 ft, you can substitute these values into the formula:

Perimeter = 2 * (3.5 ft + 4.5 ft)

Simplifying the equation:

Perimeter = 2 * 8 ft

Perimeter = 16 ft

Therefore, Mike will need 16 feet of weatherstripping.