Question

The minute hand of a circular clock is 15 cm How fare does the tip of the minute hand move in one hour (take pie =3.14)

Answer 1

In 1 hour, minute hand completes one round means makes a circle. Radius of the circle (r ) = 15 cm Circumference of circular clock = 2πr = 2 x 3.14 x 15 = 94.2 cm Therefore, the tip of the minute hand moves 94.2 cm in 1 hour.

Answer 2

Distance moved by minute hand = 2πR

D = 2*3.14*15

D = 6.28*15

D = 94.2 cm

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