How far does the tip of the minute hand of a clock move in 20 minutes if the hand is 10 inches long?

20.95 inches

Step-by-step explanation:

The complete revolution of the minute hand forms a circle in 60 minutes.

circumference of a circle = 2 radius

i.e C = 2r

But from the question, r = length of the minute hand = 10 inches

⇒ C = 2 x 10

  = 20

C = 20 inches

Also, 20 minutes = = of the circumference.

So that,

the distance of the tip of the minute hand = x C

                                                                     = x 20

                                                                     = x 20 x

                                                                     = 20.9524

                                                                     = 20.95 inches

Thus, the distance of the tip of the minute hand is 20.95 inches