Question

the minute hand of a clock is 21 cm long .find the distance described by its tip in 20 minutes​

Answer 1

Brilliant hope it’s useful

Answer 2

The distance described by its tip in 20 minutes​ is 2640

Step-by-step explanation:

Minutes hand completes 1 rotation in 1 minutes

No. of rotations completes in 20 minutes = 20

The minute hand of a clock is 21 cm

Circumference of clock = $2 \pi r = 2 \times \frac{22}{7} \times 21=132 cm$

Distance traveled in 1 rotation = 132 cm

Distance traveled in 20 orations = $132 \times 20 = 2640$

Hence the distance described by its tip in 20 minutes​ is 2640

#Learn more :

Define circumference of the circle.​

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