Find the circumference of the full circle:
Circumference = 2 x PI x radius.
The radius is given as the length of chain 16 feet.
Circumference = 2 x 3.14 x 16 = 100.48 feet.
The dog can walk 130 degrees.
Multiply the circumference by the fraction of a complete circle ( 360 degrees)
Distance = 100.48 x (130/360) = 36.28 feet
Round to 36.3 feet.
The answer is (4) 36.3 feet.