Question

Roderick works for JB Spas. He is installing a circular spa that will be enclosed by a square deck. The radius of the spa is 3.25 feet. What is the perimeter of the deck, in feet?

Answer 1

The first thing we must do for this case is to find the diameter of the circle.
 We have then:
 d = 2 * r
 Where,
 r: radius
 Substituting:
 d = 2 * (3.25)
 d = 6.5 feet
 We now look for the perimeter of the square.
 P = 4L
 Where,
 L: square side
 L = d = 6.5 feet ("a circular spa that will be enclosed by a square deck")
 Substituting we have:
 P = 4 * (6.5)
 P = 26 feet
 Answer:
 The perimeter of the deck, in feet is:
 P = 26 feet