30. A plastic cover is made for the pool. The cover will rest on the top of the pool and will include a
wedge-shaped flap that forms a 45° angle at the center of the cover, as shown in the figure below. A zipper
will go along 1 side of the wedge-shaped flap and around the arc. Which of the following is closest to the
length, in feet, of the zipper?

  • F. 17

  • G. 22

  • H. 24

  • J. 29

  • K. 57