Question

the minute hand of a clock is 7 cm long.calculate the distance covered and the displacement of minute hand of the clock in half an hour????

please answer​

Answer 1

Answer:

14 and 22 cm.

Explanation:

Since, the clock is moved from 9:00 to 9:30, the minute arm has traveled and completed a semi circle to reach 9:30. So, the the distance covered by the minute arm will be the arc from 9:00 to 9:30. The displacement will be the diameter of the swept area of the minute arm which will be 14 cm,

The, distance will be π*r where r is the radius or the length of the minute arm.

On solving we will get distance to be 22/7*7 = 22 cm.