A circular clock has an hour hand of length 6 inches. Find the length of the distance it covers by its tip from 9 p.m. to 3 a.m.
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. 6π inch.
Formula used:
Perimeter of circle = 2πr
Calculations
Radius = 6
The distance covered by its tip from 9 p.m. to 3 a.m = half of the circle
The distance is covered only by the tip of the clock, it covers only the circular part
⇒ Required length = 2πr/2 = πr
⇒ 6π