He wants 44 feet plastic edging.
Step-by-step explanation
Hand is setting up a circular base for a screen house and the dimensions of the circular base is given. we have to find out the length of plastic edging that encloses the base.The length of the edging will be the circumference of the circular base.
diameter of the base=14 feet
radius of the base=diameter/2=14/7=7 feet
The length of the plastic edging is 44 feet.