Question

The minute hand of a clock is 7 inches what distance does the tip of the minute hand move in 25 minutes

Answer 1

The arc length is the product of the radius and the angle in radians.
  s = rθ
  s = (7 in)(2π*25/60)
  s = 35π/6 in ≈ 18.33 in

In 25 minutes, the tip of the minute hand moves 35π/6 inches, about 18.33 inches.