Math Help Quick pls?

Question

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.

Answer 1

 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.

Answer 2

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

Answer 3

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.