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CBSE Class 9 Answered

The minutes hand of wall clock is 10cm long.find it's displacement and distance  covered 10am to 10.14am

 

Asked by Binithaprabakaran | 17 Jun, 2018, 03:25: PM
Expert Answer
Position of Minutes hand at 10-12 and 10-15 are shown in figure. Displacement and distance covered are also marked.
 
Displacement = 10√2 cm ( Hypotenuse of right triangle, other sides are 10 cm and 10 cm)
 
Distance covered = (1/4) th of circumference of circle of radius 10 cm = (1/4)×2×π×10 = 15.71 cm
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