Question

the minute hand of a clock is 21cm long . find the distance moved by the tip of minute hand in one hour

Answer 1

yeah sure for your help

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Thanks !

Here is your answer which you are searching for

We know that circumference = $\pi * diameter$

Diameter = 2 * Radius

Minute hand is a radius

Radius = 21 cm

21 * 2 = 42 cm

Diameter = 42 cm

Circumference = $\pi * 42cm$

===> 131.9 cm

Hence , the distance travelled by minute hand in 1 hour is 131.9 cm

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Answer 2

Answer:Diameter=2πr

R=21

than,

2π*21

2π*21=42π

Step-by-step explanation: