Clocks

How long does the track travel the second hand of a clock in 30 hours, which is 4 cm long?

Correct answer:

x =  452.39 m

Step-by-step explanation:

r=4 cm→ m=4:100  m=0.04 m o=2π⋅ r=2⋅ 3.1416⋅ 0.04≐0.2513 m n=60⋅ 30=1800  x=n⋅ o=1800⋅ 0.2513=452.39 m

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planimetricsUnits of physical quantitiesGrade of the word problem

 
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