Clock

What distance will pass end of 8 cm long hour hand for 15 minutes?

Correct result:

x =  10.5 mm

Solution:

r=8⋅ 10=80 mm o=2π⋅ r=2⋅ 3.1416⋅ 80≐502.6548 mm k=1512⋅ 60=148≐0.0208 x=o⋅ k=502.6548⋅ 0.0208=10.5 mm

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