# Math Help Quick pls?

The second hand on a clock makes 1 revolution per minute.

If the second hand is 10 cm long, determine the exact distance that the tip of the second hand travels in 12 seconds.

### 3 Answers

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- KrishnamurthyLv 71 month ago
The second hand on a clock makes 1 revolution per minute.

If the second hand is 10 cm long,

the exact distance that the tip of the second hand travels

in 12 seconds is 0.4 π cm or 1.2566 cm.

- VamanLv 72 months ago
in 12 hours, it covers on circle. In 12 sec how much

2*pi*10/( 12*60*60)*12= 20 pi/(3600)=pi/180 cm=0.01745 cm

2 pi r=62.83

12*60*60/12*0.01745=62.82

- MathguyLv 52 months ago
Circumference = 2 π r Find the circumference for r = 10 cm

Now multiply by a fraction of 12 /60 since you did not travel around a complete circle , only 12/60 ths of it.

reduce to lowest terms.

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